Our research has focused on a drug which is so powerful 　　　　able to change brain

题干

Our research has focused on a drug which is so powerful 　　　　able to change brain chemistry.

A．as to be	B．as not to be
C．as being	D．as not being

上一题下一题 0.4难度单项选择更新时间:2017-08-16 04:01:50

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