Most birds find it safe to sleep in the trees, but ______ they have eggs or youn - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

Most birds find it safe to sleep in the trees, but ______ they have eggs or young chicks, they don’t use a nest.

A．why

B．how

C．where

D．unless

答案

解析

考查连词，unless除非，相当于if not，句意是：大多数鸟觉得睡在树上是安全的，但如果不是有小鸟，它们是不会用鸟巢的。选D。

核心考点

试题【Most birds find it safe to sleep in the trees, but ______ they have eggs or youn】；主要考察你对连词等知识点的理解。[详细]

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