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患者乘车时遇急刹车，右膝前方受到撞击，出现右髋剧痛，髋关节活动障碍，处于屈曲、内收、内旋畸形状态。

该病人治疗4周后，自行下地负重行走，正常活动，预计可能发生下列哪种情况（）

A.关节强直

B.髋关节周围创伤性骨化

C.习惯性关节脱位

D.关节周围软组织损伤

E.股骨头缺血性坏死

答案

参考答案：E

判断题

孔式喷油器的喷孔直径一般比轴针式喷油器的喷孔大。
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单项选择题

In the United States in 1986, the average rate of violent crime in states with strict gun-control laws was 645 crimes per 100,000 persons—about 50 percent higher than the average rate in the eleven states where strict gun-control laws have never been passed. Thus one way to reduce violent crime is to repeal strict gun control laws.
Which of the following, if true, would most weaken the argument above

A．The annual rate of violent crime in states with strict guncontrol laws has decreased since the passage of those laws.

B．In states with strict gun-control laws, few individuals are prosecuted for violating such laws.

C．In states without strict gun-control laws, many individuals have had no formal training in the use of firearms.

D．The annual rate of nonviolent crime is lower in states with strict gun-control laws than in states without such laws.

E．(E) Less than half of the individuals who reside in states without strict gun-control laws own a gun.
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