71. (阅读理解题)
The first of April is commonly known as April Fools. Day, and it is customarily on this day to play a trick on a friend.

Pranks（恶作剧）performed on April Fool.s Day range from the simple, (such as saying, "Your shoe.s untied!), to the elaborate. Setting a roommate.s alarm clock back an hour is a common joke. Whatever the prank, the trickster usually ends it by yelling to his victim, "April Fool!"

It isn.t only children that like such jokes. Grownups like such pranks, too. The news media even gets involved. Some years ago, for example, a famous joke was played on the radio. A scientific correspondent reported that strange geological changes had resulted in weaker gravity in different parts of Britain. He asked listeners to jump up and down and see if they could jump higher than they normally could. Many people did. Not until twelve o.clock did the BBC gently remind its listeners it was April Fools’ Day that day.

It.s simply a "for-fun-only" holiday, but a holiday on which one must remain forever vigilant, for he may be the next April Fool!

(1). (单选题)
What’s the customary joke played on friends on April Fool’s Day?

(本题2.0分)
A、
To set a roommate’s alarm clock one hour before the usual hour.


B、
To fool somebody by telling him his shoe laces are unfastened.


C、
To report some gravity changes happened in certain part of Britain.


D、
To ask listeners to jump up and down to see whether they can jump higher
(2). (单选题)
The word “vigilant” in the last paragraph is closest in meaning to ____________.

(本题2.0分)
A、
watchful


B、
careful


C、
careless


D、
troublesome
(3). (单选题)
What’s the writer’s attitude towards the holiday?

(本题2.0分)
A、
Ironic（讽刺）


B、
Critical


C、
Indifferent


D、
Positive
(4). (单选题)
According to the passage, what will people do if their friends are fooled by their pranks?

(本题1.0分)
A、
. They will yield to his victim.


B、
They will end up their tricks.


C、
They will explain their pranks.


D、
They will cry out “April Fool”.
(5). (单选题)
Which of the following best summarizes the main idea of the passage?

(本题1.0分)
A、
The origin of April Fool’s Day


B、
The pranks of April Fool’s Day


C、
The news media involved in jokes


D、
Famous jokes of April Fool’s Day

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