题目内容

_______ you see it, you will never forget it.

A. Since
B. Once
C. Before
D. As soon as

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Read the text slowly _______ you may understand the story better.

A. and
B. for
C. since
D. because

I’d like to _______ her to you for the job. She is very clever and industriousgirl.

A. refer
B. suggest
C. recommend
D. propose

The man I met yesterday _______ to be one of my sister’s old friends.

A. turns off
B. turns out
C. turn on
D. turn over

A number of theories have been put forward about the possible causes ofcancer.

A. 可能造成癌症的原因已经被很多理论解释了。
B. 人们就造成癌症的可能性原因研究了很多理论。
C. 不少理论被提前拿来证明癌症的原因。
D. 人们就造成癌症的原因提出了不少理论。

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