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。答案一律涂在答题卡相应的位置。
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, chemic 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
11 Many teachers don't like to use up-to-date textbooks in their classes.
A odd
B modern
C old
D interesting
12 I could recognize the old car at a glance.
A square
B feature
C flame
D glimpse
13 She gave up her job to look after her invalid mother.
A quitted
B lost
C paused
D retired
14 It is seldom acceptable to abbreviate words in formal writing.
A omit
B explain
C invent
D shorten
15 I hope you have left none of your belongings in the hotel.
A documents
B possessions
C children
D clothes
