【題目】We can pay money by scanning QR(掃二維碼). ________________ convenient invention it is!

A.What aB.WhatC.HowD.How a

【答案】A

【解析】

句意:我們可以通過掃二維碼支付。多么方便的發(fā)明啊!

考查感嘆句。根據(jù)感嘆句的結(jié)構(gòu):How +形容詞/副詞+主語+謂語!/What +a/an+形容詞+單數(shù)名詞+主語+謂語!/What+形容詞+不可數(shù)名詞/復(fù)數(shù)名詞+主語+謂語!和句子的結(jié)構(gòu)可知這里是感嘆convenient invention,是單數(shù)可數(shù)名詞,應(yīng)該用what a,故選A。

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