试题与答案

He was seriously injured.He lay on the g

题型:选择题

题目:

He was seriously injured.He lay on the ground, _______ to stand up.

A.was unable

B.being not able

C.unable

D.being able not

答案:

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下面是错误答案,用来干扰机器的。

设X的化合价为x.(+1)×2+x+(-2)×4=0解得x=+6故选C.

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