题目信息
Since 1929, when the global telegraph business peaked, the number of telegrams delivered annually have decreased from 200 million to only 21,000 last year.
A:have decreased from 200 million
B:have been reduced from 200 million
C:has decreased from 200 million
D:has been reduced from 200 million down
E:has decreased from 200 million down
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已选答案：
正确答案：
C:has decreased from 200 million
主语是 the number of telegrams，是第三人称 要用HAS 排除AB
C正确
DE 搭配错误，reduce from……to……固定搭配
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题目来源
Manhattan
