We cannot figure out quite a number of insects, birds, and animals are dying out.A. thatB. asC. whyD

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编辑：chaxungu时间：2026-04-27 03:24:32分类：高中英语题库

【题目】We cannot figure out _______ quite a number of insects, birds, and animals are dying out.

A. thatB. as

C. whyD. when

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【答案】C

【解析】

考查宾语从句。figure out 是不及物动词加副词构成的动词短语后须跟宾语或宾语从句。句意为：我们搞不明白，为什么那么多的昆虫、鸟类、动物正在灭绝。故选C。