1.Some people who are very intelligent and successful in their fields find _______ difficult to succeed in language learning.

　　A. which B. how

　　C. that D. it

　　2.The Ocean is more than 4000 miles _______.

　　A. wider B. widest

　　C. wide D. in wide

　　3.Now you can see _______ you should consult the dictionary last， not first.

　　A. which B. what

　　C. why D. how

　　4.In one type of laboratory test all the variables _______ one are controlled.

　　A. by B. and

　　C. but D. or

　　5.Small _______ it is， an atom can still be seen.

　　A. that B. as

　　C. so D. where

　　参考答案：

　　1.正确答案：D答案解析：it在这里做形式宾语。句意为：一些在自己领域才智过人并且非常成功的人发现，在语言学习上取得成功是很困难的。

　　2.正确答案：C答案解析：空格处应该用形容词原形，more than 4000 miles wide：4000多英里宽。

　　3.正确答案：C答案解析：宾语从句。you should consult the dictionary last， not first：你应该最后查字典，而不是首先去查。

　　分析句意和各选项的意思可以看出，答案是C.see在本句中意思是“明白”。

　　4.正确答案：C答案解析：根据句子意思来确定答案，需要添入的词应该有“除了”的意思。句意为：在一类实验室测试中，除了一个变量外其余所有变量都在掌握之中。

　　5.正确答案：B答案解析：本句属于as/though引导的让步从句，将表语或状语提前(形容词， 副词， 分词， 实义动词提前)。

6.They think in getting their materials， and also in _______ them，and in plastering them together with mud.

　　A. arranging B. arrange

　　C. being arranging D. arranged

　　7.I am in favor of his proposal that a special committee _______ to examine the problem.

　　A. set up B. was set up

　　C. be set up D. is setting up

　　8.It has long been assumed _______ aggression is caused by male hormones.

　　A. what B. that

　　C. which D. who

　　9.The actor was almost _______ most audience before he played that part.

　　A. known of B. unknown to

　　C. known for D. unknown for

　　10.The fixed star was _______ a planet.

　　A. made of B. made from

　　C. made up for D. mistaken for

　　参考答案：

　　6.正确答案：A答案解析：介词in后接动名词，所以正确答案为A.

　　7.正确答案：C答案解析：这里所要考查的是虚拟语气的用法，句子中的单词proposal后面的从句做它的同位语，从句中应该使用虚拟语气，形式为“(should)+动词原形”，再者，动词应该用被动语态，所以正确答案为C.

　　8.正确答案：B答案解析：本题考查的是引导词的用法，这里的句子主语是aggression is caused by male hormones，因为主语过长，所以后置，用形式it来替代，后面的引导词就需要用that，所以答案选B.

　　9.正确答案：B答案解析：“这位演员在演这出戏之前几乎大多数观众都不知道他。”“be unknown to ”不知道，陌生。选B. unknown.

　　10.正确答案：D答案解析：be mistaken for：被误认为