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题文

The number of  the workers in this factory     300, that is to say,
it       20%.

A.has increased by; has increased to
B.have increased to; have increased by
C.has increased to; has increased by
D.have increased by; have increased to
科目 英语   题型 单选题   难度 中等
知识点: 单词、词组 动词语态 介词
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