372. Psychological studies show that some people are quick-tempered _____.

　 A. at heart　　 B. on purpose　　 C. in person　　 D. by nature

[答案] D. by nature.

[注释]by nature 天生，生来。in person 1)亲自，亲身：I shall be present at the meeting in person.(我将亲自出席会议。)2)身体上，外貌上：In person he was handsome, strong and healthy.(他面目清秀，体格强壮。)

at heart 1)内心里，实质上：His manners are cold, but he is at heart a kind man. (他的言谈举止有些冷淡，但实际上他是一个好心肠的人。)2)考虑的是......：When I say don't eat sweets, I have your health at heart.(我叫你别吃果糖，是考虑到你的健康。)on purpose 故意地。

371. The _____ stuck on the outside of the envelope said "By Air".

　 A. label　　 B. ticket　　 C. signal　　 D. sign

[答案] A. label.

[注释]label 标签，标记。signal信号. sign记号；指示牌：traffic signs (交通版示)。notice布告。

370. It was the largest experiment we had ever had; it _____ six hours.

　 A. ended　　 B. finished　　 C. prolonged　　 D. lasted

　[答案] D. lasted.

[注释]last vi. (for) 持续。

369. I have been looking for this book for months, and _____ I have found it.

　 A. at least　　 B. in no time　　 C. at last　　 D. at present

[答案] C. at last.

[注释]at last (=in the end)最终；at least至少；in no time 立即，马上；at present 目前。

368. He offered to _____ her a hand as the suitcase was too heavy for her to carry.

　 A. lend　　 B. help　　 C. show　　 D. loan

[答案] A. lend.

[注释]lend sb. a hand给某人帮个忙。

367. I'm sorry but what he thinks is not of the _____ importance to me.

　 A. merest　　 B. lowest　　 C. last　　 D. least

[答案] D. least.

[注释]least 是little的最高级形式。

366. Animals should not be locked in cages; they should be in their normal _____.

　 A. environment　　 B. position　　 C. residence　　 D. dwelling

[答案] A. environment.

[注释]environment(=surroundings, circumstances)环境，environment作集合名词用时，只用单数形式：We should work hard to improve our environment. (单词，不可数)Children need a happy home environment. (单数，可数)

365. The lady who had invited us heard me telling my wife that the dinner was terrible so I was _____.

　 A. confused　　 B. nervous　　 C. shameful　　 D. embarrassed

[答案] D. embarrassed.

[注释]be embarrassed 感到窘迫。

364. Air and the sun's rays create much distortion, and whatever tends to _____ their influence is useful to the astronomer.

　 A. exclude　　 B. eliminate　　 C. extinguish　　 D. impose

[答案] A. exclude.

[注释]exclude 排除。extinguish扑灭；eliminate消除。

impose 把......强加给：Don't impose your wishes on us.(不要把你的意思强加给我们。)

363. The filling station _____ because there were too many others on the street.

　 A. fell through　　 B. went under

　 C. fell out　　　　 D. went through

[答案] B. went under.

[注释]go under 破产，失败。fall through 也有“失败”之意，但多半指计划、想法等“落空”。

本题译文：这个加油站破产了，因为在这条街上加油站太多了。