诊断急性阑尾炎最有意义的体征是（）。 A.右下腹固定压痛 B.闭_爱下问搜题

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问题单项选择题

诊断急性阑尾炎最有意义的体征是（）。

A.右下腹固定压痛

B.闭孔内肌试验

C.腰大肌试验

D.结肠充气试验

E.肛门指检

答案

参考答案：A

选择题

在一个不透明的袋子里放入8个红球，2个白球，小明随意地摸出一球，这个球是白球的概率为[ ]

A.0.2

B.0.25

C.0.4

D.0.8

填空题

用方框中所给词的适当形式填空。

big, busy, many, play, learn

1. It's not easy for old people           English well.
2. Are you good at           basketball
3.A cow is much           than a sheep.
4. My father is much         than my mother.
5. There are          girl students in Class Two than in Class Four.