1. Professor Jordon is well known for his _____ into the habits of the common housefly.
A. examination B. introduction C. research D. expression

[答案]C. research
[注释]research into 对...研究：1)(作动词用)He is researching into the reading problems of young school children.2)（作名词用）to carry out a research(=some research)into the causes of brain damage.(对大脑损伤原因进行研究)。研究可译为make researches into, make a study of 或直接用动词study vt 或research into (a problem etc.).

2. The Prime Minister refused to comment on the rumor that he had planned to _____.
A. discharge B. dismiss C. resign D. resume

[答案]C. resign
[注释]resign(=give up a post)辞职：1)imagine he will resign.2)It was his duty to resign his position.discharge sb.= dismiss sb.解雇某人：He was discharged(=dismissed) for being dishonest.

3. It was decided to _____ the search when there was no hope of finding the missing girl alive.
A. call off B. take up C. keep off D. ring up

[答案]A. call off
[注释]call off(=cancel)取消。

4. He put in a special _____ for an extra day’s holiday so that he could attend his daughter’s wedding.
A. request B. demand C. inquiry D. proposal

[答案]A. request
[注释]request 请求，put in a request for (提出请求)。enquiry 询问，demand 需求，需要，proposal 建议，均不和题意。

5. She _____ the temptation to buy a coat she could not afford.
A. challenged B. obstructed C. contradicted D. resisted

[答案]D. resisted. [注释]resist 此处意指（=keep oneself back from）“忍住...”，resist temptation(不受诱惑)。
本题译文：她不受诱惑，不去买她买不起的外衣。