We wonder quite a number of living things are dying out.A. thatB. asC. whyD. when

发布时间：2020-08-16 23:54:30

We wonder      quite a number of living things are dying out.
A. that
B. as
C. why
D. when

网友回答

A. that
B. as
(答案→)C. why
D. when
解析：考查宾语从句。句意：我想知道为什么有如此多的生物灭绝。That在宾语从句中不能充当任何成分，之前连接作用；as不能引导宾语从句。When的意思不搭配。故C正确。
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