[单选题]Directions: Read each of the following sentences carefully, and choose A,B,C or D that has the closest meaning to the underlined word or phrase.


The machine is activated by a small set of words with every accurately defined meanings. ()

A

pushed forward

B

​set to work 

C

stopped

D

prevented 

正确答案:B
题目解析

set to work 开始工作;activate 激活。

这台机器由一小组单词激活,每个单词都有精确定义的含义。

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