The world is changing fast.I strongly believe that one will easily fall behind _______ he keeps on l

题目简介

The world is changing fast.I strongly believe that one will easily fall behind _______ he keeps on l

题目详情

The world is changing fast.I strongly believe that one will easily fall behind _______ he keeps on learning.
A.unlessB.if
C.whenD.as
题型:单选题难度:中档来源:不详

答案

A
本题考查连词用法。根据句意,如果不学习很容易落下;所以选A项。

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