题目内容

Two-thirds of his property_____lost in the fire.

A. was
B. were
C. are
D. have been

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William has cut his smoking_____to five cigarettes a day.

A. down
B. short
C. away
D. off

在关系数据库中,用来表示实体问联系的是()

A. 属性
B. 二维表
C. 网状结构
D. 树状结构

升浮的药物能()

A. 平喘
B. 潜阳
C. 发汗
D. 利尿

It ‘s_____my power to make final decision on the matter.

A. off
B. out
C. above
D. beyond

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