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【单选题】
前置胎盘是由于胚泡植入在A.
子宫前壁
B.
近子宫颈管内口
C.
子宫后壁
D.
子宫底壁
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反馈参考答案：
举一反三
【单选题】The decade of 1980s is remembered in Britain as the era of______.
A.
centralization
B.
nationalization
C.
privatization
D.
industrialization
【单选题】Owing to the unrest in North Africa, the Chinese government is _____ efforts to withdraw its nationals from Libya and neighboring countries.
A.
opening up
B.
stepping up
C.
up
D.
taking up
【简答题】均聚物结构单元键接顺序 、 、 。
【单选题】Nongfu Spring, one of China’s biggest bottled water companies, was reported ________ to meet national standards, and its chairman held a news conference in Beijing on May 7.
A.
having failed
B.
to fail
C.
failing
D.
to have failed
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