useful invention(发明) the computer is! A...

useful invention(发明) the computer is!

A．What an

B．What a

C．How

D．How a

B 【解析】此题考查是感叹句。中心词是名词所以用what来引导useful的第一个音素是辅音音素故其前加a.

考点分析：

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