单选题Since the Obama administr
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解决时间 2021-04-10 03:26
- 提问者网友：萌卜娃娃
- 2021-04-09 23:32
单选题
Since the Obama administration took office, the China—US relations ________ positive development thanks to joint efforts of both sides, President Hu said at the Nuclear Security Summit in Washington, April,12,2010.A.witnessedB.were witnessedC.had witnessedD.have witnessed
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- 五星知识达人网友：大漠
- 2021-04-09 23:54
D
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- 1楼网友：大漠
- 2021-04-10 01:12
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