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问题 单项选择题

男性，20岁，车祸后2小时，伤及右小腿，胫骨骨折端外露，出血不多，在搬运前，应该进行的处理是

A．肌肉注射哌替啶(度冷丁)
B．复位骨折，包扎伤口
C．包扎伤口和简单的外固定
D．用气囊止血带止血

答案

参考答案：C

解析：[考点] 骨折的急救
[分析] 开放性骨折病人搬运前，应包扎伤口和进行简单的外固定。包扎伤口可以止血和避免继续污染伤口，简单的外固定便于搬运和避免加重损伤及疼痛。不需要注射止痛药。出血不多，不需要止血带止血和输血。复位外露的骨折端是错误的，因为复位时可将污染带至伤口深处。

单项选择题

与正常牙冠轴面突度的生理意义无关的是（）。

A．维持牙颈部龈组织的张力

B．维持牙弓形态，分散力

C．保证食物正常排溢

D．保证食物流对牙龈的生理刺激

E．有利于提高自洁作用
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单项选择题

Congress makes the laws in the United States. It has two parts, which are more or less equal in power. They are known as the House of Representatives and the Senate. The House of Representatives is larger than the Senate whose 100 members (two from each state) serve for six years. The 435 members of the House are elected every two years, and the number from each state is determined by the population of the state. For example, California, which has a large population, has 43 representatives, while the State of Nevada has only one.
The House and Senate are divided into small groups which take care of special matters such as education or foreign affairs. The most important work of Congress is often done in these groups, which are called subcommittees.

The number of the members in the House from each state______.
A. is fixed, two from each state
B. depends on how many people the state has
C. depends on the size of the state
D. depends on the location of the state

According to the Constitution of the United States, a senator must be at least 30 years old and he must have been a citizen of the United States for nine years at the time of his election. To be elected to the House a person must be 25 years old and must have been a United States citizen for seven years. At the present time, members of Congress include businessmen, farmers, teachers, and especially lawyers. In general, senators are better known than representatives because they are fewer in number and serve for a longer time. Many American presidents served in Congress before they became president.
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