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【单选题】
甲醛与含α-H的醛酮的交叉缩合称为( )。A.
Tollens缩合
B.
Claisen-Schimidt反应
C.
Robinson缩环反应
D.
以上都不对
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举一反三
【单选题】– Can we get the computer before Wednesday? – _____. If it is 30 kilometers, we can make it, but if farther away, it will be on Thursday.
A.
I don’t know for sure
B.
Well, that all depends
C.
It’s up to you, sir
D.
There’s no need to rush
【简答题】What can we get from lifelong
learning?A. We can get new knowledge and skills and lifelong learning helps people keep up with the changing world. B. We can get more money. C. We can get better job. D....
【单选题】we can’t get seems better than we have.
A.
That, what
B.
That, which
C.
What, what
D.
What, that
【多选题】What can we get through practising shadowing?
A.
We can get the fully concentrated state-of-mind when juggling between different tasks.
B.
We can learn to listen, comprhend, and repeat.
C.
We can learn to allocate our limited mental energy wisely.
【单选题】．From what we get，we can ________ a living；what we give，however，makes a life．
A.
get
B.
make
C.
take
D.
have
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