题目内容

—Do you know that a 13-year-old English boy has done a nuclear experiment successfully?
—_______ unusual work he has done!
A.What anB.What aC.WhatD.How
C

试题分析:感叹句一般有两种结构:what +(a/an)+形容词+名词+主语+谓语!名词是复数或不可数名词,不加a/an.how+形容词+主语+谓语!work,不可数名词,故选C。
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