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___the people have become masters of their own country that science can really serve the people
A only when B it is only when C only when D it is only when
人气:317 ℃ 时间:2019-10-17 02:45:08
解答
b跟d不是一样吗b应该是then选d原因肯定不能选only开头的,因为句子不是到装句那then后面不能接从句
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