theseexperimentsweresuccessful

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更新 2022-09-03
科目英语
题型单选题
难度中等
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挑错有奖

_____ these experiments were successfully completed would we think of
going into humans.

A．If only

B．So that

C．Only if

D．Even if

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It isn't quite _____ that he will be present at the meeting.

A．sure

B．right

C．exact

D．certain

题型：未知
难度：未知

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Some friends tried to settle the quarrel between Mr. and Mrs. Brown without hurting the feeling of____ , but failed .

A．none

B．either

C．both

D．neither

题型：未知
难度：未知

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As civilization______, more and more people have realized the importance of preserving rare animals from extinction.

A．stretches

B．spreads

C．extends

D．expands

题型：未知
难度：未知

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—How do you_____to her unkindly behavior?—Only silence.
Which of the following is wrong?

A．react

B．answer

C．reply

D．respond

题型：未知
难度：未知

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Burning all the lights in the classroom will be a great______ on electric power.

A．waste

B．lack

C．drain

D．damage

题型：未知
难度：未知

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