【題目】________ important energy electricity is in our daily life now!

A.HowB.WhatC.What aD.What an

【答案】B

【解析】

句意：電在我們的日常生活中有多么重要！

考查感嘆句。英語(yǔ)感嘆句由what和how引導(dǎo)，what后面跟名詞，how后面跟形容詞或副詞。具體構(gòu)成如下：（1）what + a/an+形容詞+可數(shù)名詞單數(shù)+主語(yǔ)+謂語(yǔ)！（2）what +形容詞+不可數(shù)名詞或可數(shù)名詞復(fù)數(shù)+主語(yǔ)+謂語(yǔ)�。�3）how+形容詞或副詞+主語(yǔ)+謂語(yǔ)！本句的中心詞helpful是形容詞，可知用how引導(dǎo)此感嘆句；故選B。

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