题目内容

可以用来治疗尿崩症的降血糖药是:

A.格列齐特
B.小剂量胰岛素
C.甲苯磺丁脲
D.氯磺丙脲
E.瑞格列奈

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Directions: Choose the best answer from the four choices marked A, B, C and D.The mountains form a natural _________between the two countries.

A. prevention
B. obstruction
C. barrier
D. jam

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A. assure
B. secure
C. insure
D. issue

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A. joining
B. junction
C. networking
D. linking

One of the biggest _________advantages of the Internet is lower transaction costs.

A. abnormal
B. commercial
C. moderate
D. complicated

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