—______ did you go to Beijng with your f

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问题选择题

—______ did you go to Beijng with your family?

—We went there in July.[ ]

A. What

B. How

C. When

答案

答案：C

单项选择题

下述哪一项是小儿阑尾炎需剖腹探查的理由

A．小儿对腹膜炎的耐受性较成人差

B．小儿对高热的耐受性较成人差

C．小儿对抗生素的反应性较成人差

D．小儿腹膜炎的诊断比较容易明确

E．以上都不是

单项选择题

Which of the following is least likely to be the long-run effect of a price ceiling that is set below the equilibrium price（）

A. Sellers take bribes.

B. Suppliers discriminate.

C.Sellers improve quality.