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【单选题】
在下列材料中,电阻率最小的是: ( )A.
铜
B.
铝
C.
铁
D.
碳
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【单选题】 If you are not careful, you are going to _____ the balloon.
A.
win
B.
beat
C.
empty
D.
burst
【单选题】 Don’t talk about such things________ you do not understand.
A.
what
B.
which
C.
as
D.
those
【简答题】( ) 是指利用计算机来辅助设计人员完成设计过程中的部分工作,即运用计算机辅助一项设计的建立、修改、分析或优化。
【单选题】Alan Greenspan: the Most Powerful Guy With the American's Midterm Elections over, and a new Commander-in-Chief about to step in, some Americans are a little nervous about the nation's future. But othe...
A.
business
B.
money
C.
the Fed
D.
government
【单选题】 You________not________a person who is speaking. It is impolite.
A.
have; interrupted
B.
should; interrupt
C.
would; interrupt
D.
ought; interrupt
【单选题】 You walk on the wet hill path because you fall and hurt yourself.
A.
must; might not
B.
mustn’t;might
C.
needn’t; need
D.
must; must
【单选题】 Why not_________ his invitation if you don’t like him?
A.
to refuse
B.
refuse
C.
refusing
D.
refused
【单选题】 ________you have come, you must not go away so soon.
A.
Now that
B.
For
C.
Because
D.
So that
【单选题】 You________ return the book now. You ________ keep it till next week if you like.
A.
can’t; can
B.
mustn’t; may
C.
needn’t; can
D.
may not; must
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