Question

2. [2014 "湖南卷]You will never gain success   you are fully devoted to your work.

A. when    B. because

C. after   D. unless

Answer 1

2.    D考査状语从句。句意：如果你不是全身心地投人到工作中去，你永远不可能获得成功。此处unless相当于if not，表示含有否定意义的条件。