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问题 多项选择题

注射用冷冻干燥制品的特点是（）.

A、可避免药品因高热而分解变质

B、可随意选择溶剂以制备某种特殊药品

C、含水量低

D、所得产品质地疏松，加水后迅速溶解恢复药液原有特性

答案

参考答案：A, C, D

选择题

He would have been a doctor 20 years ago, but he _____ to be a teacher.

A．chooses

B．chose

C．had chosen

D．has chosen
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选择题

The Irish writer George Bernard Shaw made the famous remark _____ the British and the Americans

are two nations divided by a ______ language. [ ]

A. that; ordinary

B. what; average

C. which; broken

D. that; common

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