问题
选择题
___we admit that there are still some problems about NMET, we don’t mean that it’s of no use.
A．While
B．Until
C．As
D．Unless
答案
答案：A
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___we admit that there are still some problems about NMET, we don’t mean that it’s of no use.
A．While
B．Until
C．As
D．Unless
答案：A