2. 外语
  3. He came to know that the knowledge from books can be useful only______it is linked with practice.

He came to know that the knowledge from books can be useful only______it is linked with practice.

admin2014-01-17  22
问题 He came to know that the knowledge from books can be useful only______it is linked with practice.
选项 A、as
B、when
C、while
D、for
答案B
解析 状语从句。as作连词时，一般意为“正当……时候”。while作连词时，一般连接的两个同时或几乎同时发生的动作。when意为“当……时候”，前加only是为强调，only when是一习惯组合。
转载请注明原文地址:https://kaotiyun.com/show/9rFK777K
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)