第一部分：词汇选项
下面共有15个句子，每个句子中均有1个词或短语划有底横线，请从每个句子后面所给的 4个选项中选择1个与划线部分意义最相近的词或短语。
1. Ambition is a characteristic of all successful businessmen.
A. factor B. feature C. sign D. symbol
2. All living organisms, regardless of their unique identity, have certain biological, chemical, and physical characteristics in common.
A. as result of B. considering C. on purpose D. whatever
3. The immense change of the city astonished every member of the conference.
A. surprised B. interested C. bored D. excited
4. The nursery is bright and cheerful.
A. pleasant B. colorful C. fashionable D. unforgettable
5. Practically all species of animals communicate either through sounds or through a large repertory of soundless codes.
A. Simultaneously B. Almost C. Absolutely D. Basically
6. Many fine cooks insist on ingredients of the highest quality.
A. demand B. rely on C. prepare for D. create
7. While attempting to find a new route to India, Columbus discovered America by accident.
A. sailing B. failing C. trying D. hoping
8. We want to know his family background.
A. relationships B. members C. troubles D. income
9. Jim has gained so much weight that a lot of his clothes don't fit him any more.
A. put off B. put down C. put on D. put up
10. The mail was delayed for two days because of the snow-storm.
A. held in B. held up C. held down D. held off
