___________there are many different types of food, some animals spend their lives eating only one ty

题目简介

___________there are many different types of food, some animals spend their lives eating only one ty

题目详情

___________there are many different types of food, some animals spend their lives eating only one type.
A.SinceB.Unless C.OnceD.While
题型:单选题难度:中档来源:不详

答案

D

试题分析:考查连词:A. Since自从B. Unless除非C. Once一旦,     D. While虽然,当…时候,句意:虽然有很多不同类型的食物,一些动物一生只吃一种食物。选D。
点评:首先掌握各种连词的含义和作用,在做题时要弄清上下文的逻辑关系。

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