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国家开放大学-开放英语4
CETACEANS: FACT FILE
There are over 80 species of whales, dolphins and porpoises, (1)_____
collectively as ‘cetaceans’, throughout the world. They come in all shapes and sizes. Here are some facts and figures about these incredible animals.
The blue whale is (2)____
animal on Earth. The average adult length is 25m for males and 26.2m for females, (3)____
body weights of 90-120 tonnes.
Hector.s dolphin is the world.s shortest cetacean. They may be only 1.2m long when fully (4)____
.
A blue whale eats up to 4 tonnes of krill daily. This is equivalent (5)____
a fully grown African elephant every day.
The sperm whale (6)____
dive deeper than any other cetacean. They have been known to dive as deep as 2000m.
One bowhead whale is reported to (7)____
130 years old when it died.
The sperm whale has the world.s heaviest brain (8)____
can weigh up to 9.2kg. This compares (9)____
the average 1.4kg for the brain of an adult human.
The baiji dolphin, or Chinese river dolphin, is the rarest dolphin in the world and is reported to be endangered. It lives in the Yangtze River in China. Conservation measures (10)____
by the Chinese to save it.
1. A. know B. to know C. knowing D. known
2. A. heavy and long B. the heaviest and longest
C. the most heavy and long D. heavier and longer
3. A. whose B. with C. have D. which
4. A. grown B. growing C. to grow D. grow
5. A. to eat B. about eating C. to eating D. as eating
6. A. believed to B. is believed to C. was believed to D. has believed to
7. A. have been B. be C. being D. having been
8. A. who B. what C. which D. whom
9. A. to B. as C. with D. for
10. A. are taking B. are taken C. were taken D. are being taken
The surname .Smith. is very c _____ (普通的) in Britain.
They work as a group - no one person is allowed to d _______ . (支配地位).
He works in a l _______ (主要地) male company.
Space travel is one of the wonders of modern s______ (科学).
He wants to be a s ________ (科学家) in the future.
English is w______ (广泛地) used in the world.
S _________ (统计) show that women live longer than men.
I want to buy a b_________ (两种语言的) dictionary.
In some countries, a young man must join the army when he becomes of a m _______ (军事的) age.
Language will become the main c ________ (联系者) between non-native speakers of those languages.
If you _______ that something is true, you imagine that it is true, sometimes wrongly.
If something ____ , it becomes less in quantity, importance, or strength.
The ____ of a particular thing is the fact that they are more important than other things.
The ____ of something is the event of its coming into existence.
The surname .Smith. is very c _____ (普通的) in Britain.
They work as a group - no one person is allowed to d _______ . (支配地位).
He works in a l _______ (主要地) male company.
Space travel is one of the wonders of modern s______ (科学).
He wants to be a s ________ (科学家) in the future.
English is w______ (广泛地) used in the world.
S _________ (统计) show that women live longer than men.
I want to buy a b_________ (两种语言的) dictionary.
In some countries, a young man must join the army when he becomes of a m _______ (军事的) age.
Language will become the main c ________ (联系者) between non-native speakers of those languages.
If you _______ that something is true, you imagine that it is true, sometimes wrongly.
If something ____ , it becomes less in quantity, importance, or strength.
The ____ of a particular thing is the fact that they are more important than other things.
The ____ of something is the event of its coming into existence.