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单纯输精管结扎术后,比其他方法的输精管绝育术复通术成功率高

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Futures contracts usually end in the delivery of the underlying commodity.

A. True
B. False

The teenagers from North High were ______ of classmates at South High because South won to

A. indifferent
B. envious
C. cautious
D. furious

A bill of lading that covers the shipment of goods on two separate vessels is known as thorough bill of lading.

A. True
B. False

买入汇率是进口商买进外汇时所依据的汇率。()

A. 正确
B. 错误

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