Tigers and bears are very dangerous．That's（） they have to stay in cages in the zoo. -焚题库

Tigers and bears are v

单选题 Tigers and bears are very dangerous．That's（） they have to stay in cages in the zoo.

A.why

B.where

C.how

D.what

正确答案： A

答案解析: 此题考查复合句。why引导的是表示原因的从句。句意为“老虎和熊非常危险。这就是它们为什么得待在笼子里的原因”。

相关知识：第二章、语法与词汇

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