单项选择题

() all the inventions have in common is () they have succeeded.

A. That...what
B.What...that
C. That...that
D. What...what

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单项选择题
I didn't know which was the better, so I took them().

A. all
B. each
C. none
D. both
单项选择题
The statement had to be delivered to someone who could () it to the press.

A. relieve
B. release
C. emit
D. discharge
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