题目内容
(请给出正确答案)
[单选题]
Metals expand when they are heated and ____ when cooled.
A、indicate
B、eliminate
C、conquer
D、contract
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A、indicate
B、eliminate
C、conquer
D、contract
A robot can be used to expand our frontiers when ______.
A.its intelligence and cost are beyond question
B.it is able to bear the rough environment
C.it is made as complex as the human brain
D.its architecture is different from that of the present ones
A.正确
B.错误
I didn’t know __to do with it.
A. What
B. Which
C. Why
D. When
A.couldn’t have smiled
B.wouldn’t be smiling
C.didn’t smile
D.won’t smile
A、affected
B、dissed
C、plain
D、disturbed
A.you will
B.you can
C.can you
D.can’t you