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山东第一医科大学英语（4）
On her feet she wore linen stockings and prison shoes, and round her head was tied a white handkerchief, （ ） a few locks of black hair were brushed.（1分）
Afrom which
Bfrom under which
Cout of which
Dunder which
Mobile Phones are proved to with flight instruments and have a negative effect on flight safety. （1分） Ainterrupt Binterfere Ctrouble Ddisturb
I.m afraid ________ nothing I can do about it.（1分） Athere is Bit is Cthis is Dthat is
Maybe they knew this was their big （ ） , their chance to make history.（1分） Asecond Bmoment Ctimes Dhour
Can you help me with my homework? I’m （ ）.（1分） Astick Bstruck Cstricken Dstuck
His parents did everything they could to _____ his needs.（1分） Afill Bfull Cask Dbring
There’s little chance that mankind would ________ a nuclear war.（1分） Arelieve Bendure Cmaintain Dsurvive
Do you remember that our speed is 60 mph on the highway and Big Brother is watching you through his camera in some areas. （1分） Acontrol Bcondition Cpermission Dlimit
He soon received promotion, for his superiors realized that he was a man of considerable __________.（1分） Aability Badult Cacademy Dopportunity
______ his great achievements in chemistry, he was considered as one of the most outstanding scientists of the century.（1分） AIn terms of BOn behalf of COn the basis of Din the form of
Mobile office is the mutual product of economic, scientific, and social progress. Mobile office has become a solution that provides users with convenient, prompt, safe, reliable, and reasonably priced communications and office faculty anywhere anytime via the support of mobile interconnection platform (MIP) and its applications systems. Using mobile office and WAP (无线应用协议) technology, people can do their work anywhere anytime, can send and receive data via terminals such as mobile phone, and palm computer, and can surf the Internet. When you leave your office to attend meetings or travel on business, what would happen to your business routine? Of course, faxes and e-mails would be still sent to your fax machine or e-mail box, but you cannot read them and make prompt reaction timely. When your clients need you to make some urgent modifications on your work and you are neither in the office nor carrying relevant documents, what can you do? Maybe you have to say “sorry” to the clients. But your business will be affected, the clients will be unhappy and disappointed because of your delay, and you will lose a lot of business opportunities. In fact, very frequently, you need to check, reply, distribute, modify, or read some materials when you are not in your office. You must get out of this dilemma. The best solution to normally handle your business anywhere anytime and not to disappoint your clients is to let your office “move” with you. With the development of communications technology, mobile office has become simpler and smaller, and even can be realized via one mobile phone with data communications function. Thus, mobile office has already been put into your pocket, and office mobility has been realized. Mobile office has provided people with convenient, casual working environment, but at the same time it still has some unsatisfactory aspects such as mismatching equipment interface (界面) and inadequate battery. Nevertheless, we believe that with technical progress, people can certainly overcome all kinds of difficulties. Mobile office will realize the dream of completely free communication. Users will enjoy more colorful life and better working environment, and users’ living standard, working efficiency, and even enterprises’ production efficiency will certainly be immensely raised. （10分） (1)According to the passage, mobile office helps you with the following except ________.（2分） Akeeping update with the latest news Bchecking e-mails any time one wants Cconducting internet surfing Dfinding one’s true love in life 正确答案D您的答案是 D回答正确展开 (2)Which of the following best expresses the main idea of the second paragraph?（2分） AYou would lose a lot of business opportunities if you always delay your work. BYou should read and reply faxes and e-mail timely. CWhen you leave your office your business routine might be damaged. DWhen you cannot meet the need of your clients you should immediately say “sorry” 正确答案A您的答案是 A回答正确展开 (3)When you let your office “move” with you, you ________.（2分） Awill never let your clients down Bdon.t have to stay at office anymore Cthen find the best way to handle your business anywhere anytime Dno longer face the dilemma between work and life 正确答案C您的答案是 B回答错误展开 (4)It can be inferred from the passage that ________.（2分） Amobile office communication is very cost-consuming Bwith the development of science, mobile office has eventually come to our life Cpeople had no convenient and reliable communications and office faculty before Deconomic factors are essential in the operation of mobile office 正确答案B您的答案是 B回答正确展开 (5)According to the author, mobile office ________.（2分） Awould help achieve complete communication mobility Bis too expensive for small companies to afford Chas some fatal defects impossible to modify Dis too complicated to operate in everyday business 正确答案A您的答案是 A回答正确
Some people believe that international sport creates goodwill between the nations and that if countries play games together they will learn to live together. Others say that the opposite is true: the international contests encourage false national pride and lead to misunderstanding and hatred. There is probably some truth in both arguments, but in recent years the Olympic Games have done little to support the view that sports encourage international brotherhood. Not only was there the tragic incident involving the murder of athletes, but the Games were also ruined by lesser incidents caused principally by minor national contests. One country received its second-place medals with visible indignation after the hockey final. There had been noisy scenes at the end of the hockey matches, the losers objecting to the final decisions. They were convinced that one of their goals should not have been disallowed and that their opponents’ victory was unfair. Their manager was in a rage when he said: “This wasn’t hockey. Hockey and the International Hockey Federation are finished.” The president of the Federation said later that such behavior could result in the suspension of the team for at least three years. The American basketball team announced that they would not yield first place to Russia, after a disputable end to their contest. The game had ended in disturbance. It was thought at first that the United States had won, by a single point, but it was announced that there were three seconds still to play. A Russian player then threw the ball from one end of the court to the other, and another player popped it into the basket. It was the first time the U.S.A. had ever lost an Olympic basketball match. An appeal jury debated the matter for four and a half hours before announcing that the result would stand. The American players then voted not to receive the silver medals.Incidents of this kind will continue as long as sport is played competitively rather than for the love of the game. The suggestion that athletes should compete as individuals, or in non-national terms, might be too much to hope for. But in the present organization of the Olympics there is far too much that encourages aggressive patriotism. （10分） (1)According to the author, recent Olympic Games have （ ）（2分） Acreated goodwill between the nations Bbred only false national pride Chardly showed any international friendship Dled to more and more misunderstanding and hatred 正确答案C您的答案是 C回答正确展开 (2)What did the manager mean by saying,“...Hockey and the International Hockey Federation are finished”?（2分） AHis team would no longer take part in international games. BHockey and the Federation are ruined by the unfair decisions. CThere should be no more hockey matches organized by the Federation. DThe Federation should be dissolved. 正确答案B您的答案是 B回答正确展开 (3)The basketball example implied that （ ）（2分） Atoo much patriotism was displayed in the incident Bthe announcement to prolong the match was wrong Cthe appeal jury was too hesitant in making the decision DThe American team was right in receiving the silver medals 正确答案A您的答案是 D回答错误展开 (4)The author gives the two examples in paragraph 2 and 3 to show （ ）（2分） Ahow false national pride led to undesirable incidents in international games Bthat sportsmen have been more obedient than they used to be Cthat competitiveness in the games discourages international friendship Dthat unfair decisions are common in Olympic Games 正确答案A您的答案是 C回答错误展开 (5)What conclusion can be drawn from the passage?（2分） AThe organization of the Olympic Games must be improved. BAthletes should compete as individuals in the Olympic Games. CSport should be played competitively rather than for the love of the game. DInternational contests are liable for misunderstanding between nations 正确答案A您的答案是 A回答正确
Through a series of experiments an American scientist has obtained an understanding of the social structure of the most complex of ant societies. The ants examined are the only creatures other than man to have given up hunting and collecting for a completely agricultural way of life. In their underground nests they cultivate gardens on soil made from finely chopped leaves. This is a complex operation requiring considerable division of labor. The worker of this type of ant can be divided into four groups according to size. Each of groups performs a particular set of jobs. The making and care of the gardens and the nursing of the young ants are done by the smallest workers. Slightly larger workers are responsible for chopping up leaves to make them suitable for use in the gardens and for cleaning the nest. A third group of still larger ants do the construction work and collect fresh leaves from outside the nest. The largest are the soldier ants, responsible for defending the nest. To find out how good the various size –groups are at different tasks, the scientist measured the amount of work done by the ants against the amount of energy they used. He examined first the gathering and carrying of leaves. He selected one of the size-groups, and then measured how efficiently these ants could find leaves and run back to the nest. Then he repeated the experiment for each of the other size-groups. In this way he could see whether any other group could do the job more efficiently than the group normally undertaking it. The intermediate-size ants that normally perform this task proved to be the most efficient for their energy costs, but when the scientist examined the whole set of jobs performed by each group of ants it appeared that some sizes of worker ant were not ideally suited to the particular jobs they performed. （10分） (1)In which way are the ants dissimilar to other non-human societies?（2分） AThey do not need to search for food. BThey do not need to look for shelter. CIndividuals vary in social status. DIndividuals perform different functions. 正确答案A您的答案是 D回答错误展开 (2)It seems that smaller ants perform more of the _______.（2分） Aconstruction tasks Bdomestic tasks Cdefensive work Dheavy work 正确答案B您的答案是 B回答正确展开 (3)The word “good” (Line 1, Para.3) refers to the ants __________.（2分） Aco-operation in working Bsense of responsibility Cefficiency in working Dwillingness to work hard 正确答案C您的答案是 A回答错误展开 (4)The scientist’s work was based on ________.（2分） Aoccasionally observation Bsystematic observation Cobservations of several nests Dobservations of an undisturbed nest. 正确答案B您的答案是 D回答错误展开 (5)The observation of the ants bears the effect of _________.（2分） Agetting the most work done Bdividing the work up systematically Ceach ant helping with all the task Deach ant doing what it can do best ERising divorce rate in America today. 正确答案B您的答案是 B回答正确
A house is the most expensive thing most people will ever buy. Very few people have enough money of their own to buy a home, so they have to borrow money from a bank. Borrowing money from a bank to buy a house is called “take a mortgage ”. The bank usually lends money or gives a mortgage for twenty-five years. Houses are so expensive that many people nowadays have to borrow as much as $ 50 000. In other words, they will have a $ 50 000 mortgage. How can you get a mortgage? When you find a house you like, you go to a bank. The bank will research you financial history and decide if they think you are a good risk. They will want to know what kind of job you have, what kind of salary you make, and how long you have had the job. They will also want to know how much money you have. In addition, the banks will require a down payment. Depending on which state you live in, the bank may require as much as 30% of the-price of the house as a down payment. The bank will then lend you the rest of the money to buy the house. Many people are never able to buy a house because they cannot save enough money for the down payment. （10分） (1)What does a house mean in the United States?（2分） AIt is a dream which many people can hardly realize. BIt is so expensive that many people cannot really buy them. CIt is the most important property that many people try to buy. DIt doesn.t belong to people if they can.t borrow money from the bank. 正确答案C您的答案是 C回答正确展开 (2)If American people borrow money from the bank for 25 years, this means that the person who borrows _________．（2分） Ahas 25 years to pay back the money Bhas more than 25 years to pay back the money Chas less than 25 years to pay back the money Dhas about 25 years to pay back the money 正确答案A您的答案是 A回答正确展开 (3)What does“down payment” refer to in the passage?（2分） AMoney borrowed from a bank as a mortgage. BMoney paid to a bank before the mortgages is given. CInterest received by a person who borrows money as the mortgages. DInterest charged by a bank on a mortgage. 正确答案B您的答案是 B回答正确展开 (4)Which is not one of the things researched by a bank?（2分） AHow much money the borrower owns. BWhat salary the borrower makes. CWhat kind of job the borrower has. DWhat kind of house the borrower lives in. 正确答案D您的答案是 D回答正确展开 (5)The most suitable title for this passage would be _______.（2分） AHow to Save Money on the House BHow to Borrow Money from a Bank CHow to Take a Mortgage DHow to Buy a House 正确答案C您的答案是 C回答正确
You might not normally think of frogs as being colorful, but these frogs definitely are—the dart-poison frogs of Central and South America. They have striking colors—often yellow with black stripes or deep blue with black spots. Beyond being nice to look at, these markings have a purpose. They warn predators that these frogs are poisonous. When threatened, these frogs secrete a substance through their skin that would easily kill whatever animal might try to eat them. Their bright colors communicate this, and so most animals tend not to hunt them. Now, speaking of hunting, for centuries these frogs were sought after by hunters. As you might think, the hunters didn’t want to eat the frogs, but rather, they captured them for their poison. They would add the poison to the tips of their hunting arrows—of course, nowadays most hunters use guns. These days dart-poison frogs are of less interest to hunters than to medical researchers. Researchers believe that they can make new heart medicine from the poison, because it acts as a stimulant on the body’s nervous system. Researchers think they would use it to stimulate a weak heart. There is, however, a problem with doing research on these frogs. Those that are caught in the wild will produce their poison until they die. However, those that are born in captivity will not produce any poison at all. （10分） (1)What is the passage mainly about?（2分） AThe characteristics of dart-poison frogs. BThe habitat of dart-poison fogs. CThe role of dart-poison frogs in their ecosystem. DThe various ways dart-poison frogs can camouflage themselves. 正确答案A您的答案是 D回答错误展开 (2)What does the speaker imply about the frogs’ colors?（2分） AThey don’t vary within the species. BThey change when the frog is threatened. CThey attract the frogs’ mates. DThey help protect the frogs 正确答案D您的答案是 B回答错误展开 (3)What did hunters use to do with the frogs that they captured?（2分） AThey ate them. BThey used their skins to make dyes. CThey collected the frogs’ poison. DThey used them to make medicine. 正确答案C您的答案是 A回答错误展开 (4)What is the problem with frogs born in captivity?（2分） AThey die shortly after birth. BThey don’t produce any poison. CTheir behavior is too unpredictable. DThey don’t develop the colorful markings. 正确答案B您的答案是 D回答错误展开 (5)Why are scientists studying dart-poison frogs?（2分） ATo develop new drug therapies. BTo learn how to reverse the effects of their poison. CTo discover how to breed them successfully in captivity. DTo help repopulate the species. 正确答案A您的答案是 C回答错误
Mobile Phones are proved to with flight instruments and have a negative effect on flight safety. （1分） Ainterrupt Binterfere Ctrouble Ddisturb
I.m afraid ________ nothing I can do about it.（1分） Athere is Bit is Cthis is Dthat is
Maybe they knew this was their big （ ） , their chance to make history.（1分） Asecond Bmoment Ctimes Dhour
Can you help me with my homework? I’m （ ）.（1分） Astick Bstruck Cstricken Dstuck
His parents did everything they could to _____ his needs.（1分） Afill Bfull Cask Dbring
There’s little chance that mankind would ________ a nuclear war.（1分） Arelieve Bendure Cmaintain Dsurvive
Do you remember that our speed is 60 mph on the highway and Big Brother is watching you through his camera in some areas. （1分） Acontrol Bcondition Cpermission Dlimit
He soon received promotion, for his superiors realized that he was a man of considerable __________.（1分） Aability Badult Cacademy Dopportunity
______ his great achievements in chemistry, he was considered as one of the most outstanding scientists of the century.（1分） AIn terms of BOn behalf of COn the basis of Din the form of
Mobile office is the mutual product of economic, scientific, and social progress. Mobile office has become a solution that provides users with convenient, prompt, safe, reliable, and reasonably priced communications and office faculty anywhere anytime via the support of mobile interconnection platform (MIP) and its applications systems. Using mobile office and WAP (无线应用协议) technology, people can do their work anywhere anytime, can send and receive data via terminals such as mobile phone, and palm computer, and can surf the Internet. When you leave your office to attend meetings or travel on business, what would happen to your business routine? Of course, faxes and e-mails would be still sent to your fax machine or e-mail box, but you cannot read them and make prompt reaction timely. When your clients need you to make some urgent modifications on your work and you are neither in the office nor carrying relevant documents, what can you do? Maybe you have to say “sorry” to the clients. But your business will be affected, the clients will be unhappy and disappointed because of your delay, and you will lose a lot of business opportunities. In fact, very frequently, you need to check, reply, distribute, modify, or read some materials when you are not in your office. You must get out of this dilemma. The best solution to normally handle your business anywhere anytime and not to disappoint your clients is to let your office “move” with you. With the development of communications technology, mobile office has become simpler and smaller, and even can be realized via one mobile phone with data communications function. Thus, mobile office has already been put into your pocket, and office mobility has been realized. Mobile office has provided people with convenient, casual working environment, but at the same time it still has some unsatisfactory aspects such as mismatching equipment interface (界面) and inadequate battery. Nevertheless, we believe that with technical progress, people can certainly overcome all kinds of difficulties. Mobile office will realize the dream of completely free communication. Users will enjoy more colorful life and better working environment, and users’ living standard, working efficiency, and even enterprises’ production efficiency will certainly be immensely raised. （10分） (1)According to the passage, mobile office helps you with the following except ________.（2分） Akeeping update with the latest news Bchecking e-mails any time one wants Cconducting internet surfing Dfinding one’s true love in life 正确答案D您的答案是 D回答正确展开 (2)Which of the following best expresses the main idea of the second paragraph?（2分） AYou would lose a lot of business opportunities if you always delay your work. BYou should read and reply faxes and e-mail timely. CWhen you leave your office your business routine might be damaged. DWhen you cannot meet the need of your clients you should immediately say “sorry” 正确答案A您的答案是 A回答正确展开 (3)When you let your office “move” with you, you ________.（2分） Awill never let your clients down Bdon.t have to stay at office anymore Cthen find the best way to handle your business anywhere anytime Dno longer face the dilemma between work and life 正确答案C您的答案是 B回答错误展开 (4)It can be inferred from the passage that ________.（2分） Amobile office communication is very cost-consuming Bwith the development of science, mobile office has eventually come to our life Cpeople had no convenient and reliable communications and office faculty before Deconomic factors are essential in the operation of mobile office 正确答案B您的答案是 B回答正确展开 (5)According to the author, mobile office ________.（2分） Awould help achieve complete communication mobility Bis too expensive for small companies to afford Chas some fatal defects impossible to modify Dis too complicated to operate in everyday business 正确答案A您的答案是 A回答正确
Some people believe that international sport creates goodwill between the nations and that if countries play games together they will learn to live together. Others say that the opposite is true: the international contests encourage false national pride and lead to misunderstanding and hatred. There is probably some truth in both arguments, but in recent years the Olympic Games have done little to support the view that sports encourage international brotherhood. Not only was there the tragic incident involving the murder of athletes, but the Games were also ruined by lesser incidents caused principally by minor national contests. One country received its second-place medals with visible indignation after the hockey final. There had been noisy scenes at the end of the hockey matches, the losers objecting to the final decisions. They were convinced that one of their goals should not have been disallowed and that their opponents’ victory was unfair. Their manager was in a rage when he said: “This wasn’t hockey. Hockey and the International Hockey Federation are finished.” The president of the Federation said later that such behavior could result in the suspension of the team for at least three years. The American basketball team announced that they would not yield first place to Russia, after a disputable end to their contest. The game had ended in disturbance. It was thought at first that the United States had won, by a single point, but it was announced that there were three seconds still to play. A Russian player then threw the ball from one end of the court to the other, and another player popped it into the basket. It was the first time the U.S.A. had ever lost an Olympic basketball match. An appeal jury debated the matter for four and a half hours before announcing that the result would stand. The American players then voted not to receive the silver medals.Incidents of this kind will continue as long as sport is played competitively rather than for the love of the game. The suggestion that athletes should compete as individuals, or in non-national terms, might be too much to hope for. But in the present organization of the Olympics there is far too much that encourages aggressive patriotism. （10分） (1)According to the author, recent Olympic Games have （ ）（2分） Acreated goodwill between the nations Bbred only false national pride Chardly showed any international friendship Dled to more and more misunderstanding and hatred 正确答案C您的答案是 C回答正确展开 (2)What did the manager mean by saying,“...Hockey and the International Hockey Federation are finished”?（2分） AHis team would no longer take part in international games. BHockey and the Federation are ruined by the unfair decisions. CThere should be no more hockey matches organized by the Federation. DThe Federation should be dissolved. 正确答案B您的答案是 B回答正确展开 (3)The basketball example implied that （ ）（2分） Atoo much patriotism was displayed in the incident Bthe announcement to prolong the match was wrong Cthe appeal jury was too hesitant in making the decision DThe American team was right in receiving the silver medals 正确答案A您的答案是 D回答错误展开 (4)The author gives the two examples in paragraph 2 and 3 to show （ ）（2分） Ahow false national pride led to undesirable incidents in international games Bthat sportsmen have been more obedient than they used to be Cthat competitiveness in the games discourages international friendship Dthat unfair decisions are common in Olympic Games 正确答案A您的答案是 C回答错误展开 (5)What conclusion can be drawn from the passage?（2分） AThe organization of the Olympic Games must be improved. BAthletes should compete as individuals in the Olympic Games. CSport should be played competitively rather than for the love of the game. DInternational contests are liable for misunderstanding between nations 正确答案A您的答案是 A回答正确
Through a series of experiments an American scientist has obtained an understanding of the social structure of the most complex of ant societies. The ants examined are the only creatures other than man to have given up hunting and collecting for a completely agricultural way of life. In their underground nests they cultivate gardens on soil made from finely chopped leaves. This is a complex operation requiring considerable division of labor. The worker of this type of ant can be divided into four groups according to size. Each of groups performs a particular set of jobs. The making and care of the gardens and the nursing of the young ants are done by the smallest workers. Slightly larger workers are responsible for chopping up leaves to make them suitable for use in the gardens and for cleaning the nest. A third group of still larger ants do the construction work and collect fresh leaves from outside the nest. The largest are the soldier ants, responsible for defending the nest. To find out how good the various size –groups are at different tasks, the scientist measured the amount of work done by the ants against the amount of energy they used. He examined first the gathering and carrying of leaves. He selected one of the size-groups, and then measured how efficiently these ants could find leaves and run back to the nest. Then he repeated the experiment for each of the other size-groups. In this way he could see whether any other group could do the job more efficiently than the group normally undertaking it. The intermediate-size ants that normally perform this task proved to be the most efficient for their energy costs, but when the scientist examined the whole set of jobs performed by each group of ants it appeared that some sizes of worker ant were not ideally suited to the particular jobs they performed. （10分） (1)In which way are the ants dissimilar to other non-human societies?（2分） AThey do not need to search for food. BThey do not need to look for shelter. CIndividuals vary in social status. DIndividuals perform different functions. 正确答案A您的答案是 D回答错误展开 (2)It seems that smaller ants perform more of the _______.（2分） Aconstruction tasks Bdomestic tasks Cdefensive work Dheavy work 正确答案B您的答案是 B回答正确展开 (3)The word “good” (Line 1, Para.3) refers to the ants __________.（2分） Aco-operation in working Bsense of responsibility Cefficiency in working Dwillingness to work hard 正确答案C您的答案是 A回答错误展开 (4)The scientist’s work was based on ________.（2分） Aoccasionally observation Bsystematic observation Cobservations of several nests Dobservations of an undisturbed nest. 正确答案B您的答案是 D回答错误展开 (5)The observation of the ants bears the effect of _________.（2分） Agetting the most work done Bdividing the work up systematically Ceach ant helping with all the task Deach ant doing what it can do best ERising divorce rate in America today. 正确答案B您的答案是 B回答正确
A house is the most expensive thing most people will ever buy. Very few people have enough money of their own to buy a home, so they have to borrow money from a bank. Borrowing money from a bank to buy a house is called “take a mortgage ”. The bank usually lends money or gives a mortgage for twenty-five years. Houses are so expensive that many people nowadays have to borrow as much as $ 50 000. In other words, they will have a $ 50 000 mortgage. How can you get a mortgage? When you find a house you like, you go to a bank. The bank will research you financial history and decide if they think you are a good risk. They will want to know what kind of job you have, what kind of salary you make, and how long you have had the job. They will also want to know how much money you have. In addition, the banks will require a down payment. Depending on which state you live in, the bank may require as much as 30% of the-price of the house as a down payment. The bank will then lend you the rest of the money to buy the house. Many people are never able to buy a house because they cannot save enough money for the down payment. （10分） (1)What does a house mean in the United States?（2分） AIt is a dream which many people can hardly realize. BIt is so expensive that many people cannot really buy them. CIt is the most important property that many people try to buy. DIt doesn.t belong to people if they can.t borrow money from the bank. 正确答案C您的答案是 C回答正确展开 (2)If American people borrow money from the bank for 25 years, this means that the person who borrows _________．（2分） Ahas 25 years to pay back the money Bhas more than 25 years to pay back the money Chas less than 25 years to pay back the money Dhas about 25 years to pay back the money 正确答案A您的答案是 A回答正确展开 (3)What does“down payment” refer to in the passage?（2分） AMoney borrowed from a bank as a mortgage. BMoney paid to a bank before the mortgages is given. CInterest received by a person who borrows money as the mortgages. DInterest charged by a bank on a mortgage. 正确答案B您的答案是 B回答正确展开 (4)Which is not one of the things researched by a bank?（2分） AHow much money the borrower owns. BWhat salary the borrower makes. CWhat kind of job the borrower has. DWhat kind of house the borrower lives in. 正确答案D您的答案是 D回答正确展开 (5)The most suitable title for this passage would be _______.（2分） AHow to Save Money on the House BHow to Borrow Money from a Bank CHow to Take a Mortgage DHow to Buy a House 正确答案C您的答案是 C回答正确
You might not normally think of frogs as being colorful, but these frogs definitely are—the dart-poison frogs of Central and South America. They have striking colors—often yellow with black stripes or deep blue with black spots. Beyond being nice to look at, these markings have a purpose. They warn predators that these frogs are poisonous. When threatened, these frogs secrete a substance through their skin that would easily kill whatever animal might try to eat them. Their bright colors communicate this, and so most animals tend not to hunt them. Now, speaking of hunting, for centuries these frogs were sought after by hunters. As you might think, the hunters didn’t want to eat the frogs, but rather, they captured them for their poison. They would add the poison to the tips of their hunting arrows—of course, nowadays most hunters use guns. These days dart-poison frogs are of less interest to hunters than to medical researchers. Researchers believe that they can make new heart medicine from the poison, because it acts as a stimulant on the body’s nervous system. Researchers think they would use it to stimulate a weak heart. There is, however, a problem with doing research on these frogs. Those that are caught in the wild will produce their poison until they die. However, those that are born in captivity will not produce any poison at all. （10分） (1)What is the passage mainly about?（2分） AThe characteristics of dart-poison frogs. BThe habitat of dart-poison fogs. CThe role of dart-poison frogs in their ecosystem. DThe various ways dart-poison frogs can camouflage themselves. 正确答案A您的答案是 D回答错误展开 (2)What does the speaker imply about the frogs’ colors?（2分） AThey don’t vary within the species. BThey change when the frog is threatened. CThey attract the frogs’ mates. DThey help protect the frogs 正确答案D您的答案是 B回答错误展开 (3)What did hunters use to do with the frogs that they captured?（2分） AThey ate them. BThey used their skins to make dyes. CThey collected the frogs’ poison. DThey used them to make medicine. 正确答案C您的答案是 A回答错误展开 (4)What is the problem with frogs born in captivity?（2分） AThey die shortly after birth. BThey don’t produce any poison. CTheir behavior is too unpredictable. DThey don’t develop the colorful markings. 正确答案B您的答案是 D回答错误展开 (5)Why are scientists studying dart-poison frogs?（2分） ATo develop new drug therapies. BTo learn how to reverse the effects of their poison. CTo discover how to breed them successfully in captivity. DTo help repopulate the species. 正确答案A您的答案是 C回答错误