Unit 2 Cloning Learning about language课时作业

第一节 单项选择

1．The meaning of the word "nice' changed a few times it finally came to include the sense "pleasant."

　　A. before B. after C. since D. while

【考点】考察状语从句连词词义辨析

【答案】A

【解析】连词before在...之前；after在...之后；since自从，既然；D当...时；然而；句义：在"nice"这个词最后包括有"pleasant"的意义之前，它的意思已经变化了好几次了。本句中的副词finally说明最后nice包括有"pleasnt"的意思，说明意义多次变化是之前发生的事情。根据句义说明A正确。

2. You can't borrow books from the school library ______ you get your student card.

A. before B. if C. while D. as

〖答案〗A

〖考点〗本题考查状语从句的引导词。

〖解析〗该句的意思是：在你得到你的学生卡之前你不能从学校图书馆借书。所以选before。

3．What we expect from you is working hard hardly working.

　　A. less than B. rather than

　　C. as well as D. as much as

【考点】考察介词短语辨析

【答案】B

【解析】介词动词less than少于...；rather than而不是...；as well as...和...同...也...并；as much as...多达...；句义：我们对你的期待是努力工作而不是几乎不工作。根据句义说明B正确。

4. Some animals carry seeds from one place to another, ______ plants can spread to new places.

A. so B. or

C. for D. but

【考点】考察连词辨析

【答案】A

【解析】本题考察的连词都是常见的连词。So于是（强调上下文因果关系）；or或者；for由于，因为（起补充说明作用）;but但是（表示转折）；句意：一些动物把种子从一个地