Unit 5 theme parks learning about language课时作业

Ⅰ.单项填空

1．I don't know what the signal "X" ________ on the road.Could you tell me?

A．stands B．refers to

C．means D．stands for

2．-________ doesn't always happen as we expect.

-Really！So we mustn't take the impossible things as our aims in case that we might be disappointed in future.

A．Anything B．Everything

C．Nothing D．Something

答案　B

解析　根据句意"并不是每件事情都像我们希望的那样发生"，everything与否定词连用，构成部分否定。

3．________I have to give a speech，I get extremely nervous before I start.(2013·山东，28)

A．Whatever B．Whenever

C．Whoever D．However

答案　B

解析　考查状语从句--时间状语从句。根据句意"每当我做演讲时，在开始前我都会感到非常紧张"可知whenever每当，无论什么时候，符合题意。

4．According to scientists, our mental abilities begin to________from the age of 27 after reaching the highest level at 22.(2012·浙江，12)

A．differ B．shrink C．fail D．decline

答案　D

解析　句意为：据科学家称，我们的脑力在22岁达到最高水平之后便从27岁开始衰退。decline衰退，下降，变弱，符合句意。differ不同；shrink缩水；fail失败、衰竭。

A．sacrifice B．substitute C．simplify D．survive

答案　C

解析　句意为：聪明的人总是会把复杂的问题简单化，而愚蠢的人更有可能把简单的问题复杂化。A项意为"牺牲；把......奉献给"；B项意为"代替，替换"；C项意为"简化，使简易"；D项意为"幸存，比......活得长"。故选C项。