The element radium, ______ in the chemistry lab, gave off a blue light.A.discoveringB.to be discover

题目简介

The element radium, ______ in the chemistry lab, gave off a blue light.A.discoveringB.to be discover

题目详情

The element radium, ______ in the chemistry lab, gave off a blue light.
A.discoveringB.to be discoveredC.to discoverD.discovered
题型:单选题难度:偏易来源:不详

答案

D
考查过去分词作定语,此题表示被动完成,句意:在化学实验室被发现的镭元素释放出蓝色的光。故选D。

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