Unit 5 theme parks Grammar课时作业

Ⅰ.单项填空

1．The limits of a person's intelligence，generally speaking，are fixed at birth，but________he reaches these limits will depend on his environment.

A．where B．whether

C．that D．why

答案　B

解析　句意为：一个人的智力极限，通常来说，出生时就已经定型了。但他是否能够达到这些极限则取决于他所处的环境。根据depend on可知，主语从句含有不确定因素，可排除C项。where表示地点；why表示原因，用于此处不合适；而使用whether表示"是否"，与题意吻合。

2．Occasions are quite rare ________ I have the time to spend a day with my kids.

A．who B．which C．why D．when

答案　D

解析　句意为：我一整天都和孩子们待在一起的这种机会是很少的。when引导的从句作occasions的同位语。

3．People in Chongqing are proud of ________ they have achieved in the past ten years.

A．that B．which

C．what D．how

答案　C

解析　"________ they have achieved in the past ten years"在句中作介词of的宾语，引导词在从句中作achieved的宾语，用what。

4．Evidence has been found through years of study ________ children's early sleeping problems are likely to continue when they grow up.

A．why B．how C．whether D．that

答案　D

解析　句意为：经过多年的研究，孩子们的早期睡眠问题在长大后可能会继续的证据已经被找到。分析题意可知"children's early sleeping problems are...grow up"是Evidence的同位语，而从句中不缺少句子成分，故用that引导该同位语从句。

5．Whether ways will be found to stop pollution is just ________ worries the public.

A．which B．that C．what D．where

答案　C