◎ 题干
We cannot figure out __quite a number of insects, birds, and animals are dying out.
[     ]
A. that        
B. as          
C. why        
D. when
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“We cannot figure out __quite a number of insects, birds, and animals are dying out.[ ]A. that B. asC. why D. when…”主要考查了你对  【连接副词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。