Unit 5 First aid reading课时作业

第一节：单项填空（共15小题；每小题1分，满分15分）

　　请认真阅读下面各题，从题中所给的A、B、C、D四个选项中，选出最佳选项，并在答题纸上将该项涂黑。

1. The point is that you should be happy with what you already have and not risk losing it by being ______ and trying to get more.

A. cautious B. considerate C. greedy D. sensitive

【答案】C

【解析】考查形容词。A. cautious谨慎的；B. considerate体贴的；C. greedy贪婪的；D. sensitive敏感的。句意：关键是你应该对已经拥有的东西感到满意，而不是冒着失去它的风险，贪婪的并试图获得更多。根据and trying to get more.可知是贪婪的，故选C.

2. It's thought that one's anxiety often occurs as a result of his unsuccessful ____ to the new surroundings.

A. expectation B. adaptation C. description D. reference

【答案】B

【解析】考查名词。A. expectation期待，预期；B. adaptation适应；C. description描述，描写；D. reference参考。句意：人们认为，一个人的焦虑往往是由于他不能成功适应新环境而产生的。根据the new surroundings.可知是适应新环境，故选B.

3. Although a gorilla won't talk, ________ it can use body language to answer back and forth. It is the same with the way the other animals communicate.

A. moreover B. nevertheless C. somehow D. therefore

【答案】B

【解析】考查副词。A. moreover而且，此外；B. nevertheless然而，不过；C. somehow以某种方法；D. therefore因此，所以。句意：虽然大猩猩不会说话，但它可以用肢体语言来反复回答。这和其他动物的交流方式是一样的。此处表示转折，故选B.

4. some scientists believe that the development of full artificial intelligence could _____ the end of the human race.

A. spell B. increase C. promote D. threaten

【答案】A