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【简答题】
分析中国外汇储备迅速增加的原因，并给出你自己关于中国外汇储备规模是否合理的理由。
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反馈参考答案：
举一反三
【单选题】NASA's working definition for 'life' is: "Life is a self-sustaining system capable of ______________ evolution."
A.
rapid
B.
Darwinian
C.
slow
D.
radical
【单选题】It's so kind of you to help us. Without your help, we couldn't have finished the work___________. [ ]
A.
in a time
B.
at no time
C.
ahead of time
D.
behind time
【单选题】When did NASA．staff working on a successor to the shuttle? A．One year before the Columbia disaster.
B.
One year after the Columbia disaster.
C.
Immediately after the Columbia disaster.
D.
Years before the Columbia disaster.
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