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问题 单项选择题

对于拔牙创的处理，错误的操作是（）

A.应用刮匙去除拔牙窝内残留的牙石、牙碎片或骨碎片，避免拔牙后感染

B.拔牙后牙槽窝有不同程度的扩大，应用手指作颊舌向压迫，使之复位

C.有牙槽骨骨折时，也应压迫复位，但若骨折片已与骨膜分离，则应去除

D.对于过高或尖锐的牙槽嵴，为避免妨碍愈合、引起疼痛或影响义齿修复，应用咬骨钳修整

E.检查完拔牙创后，应在拔牙窝内置入消毒纱布棉卷，咬紧半小时无出血后才能离开

答案

参考答案：E

解析：消毒棉卷应横过牙槽嵴，置于拔牙创的表面，而不是置入牙槽窝。

单项选择题

In the United States and in many other countries around the world, there are four main ways for people to be (91) about developments in the news: newspapers, magazines, and radio or television news broadcasts. A person may use one, or all, of these (92) for information. Each source is useful in its (93) way. Newspapers and magazines can give much information about a particular event. They may (94) some history of the event, some of its (95) , some of its effects, or perhaps give an (96) or point of view on a particular development. Radio and television can help a person to be well informed about what is happening each day. It is also (97) to listen to radio or watch TV (98) do something else at the same time. Many people can listen to the news on their car radio while driving (99) . For the student of English as a foreign language, an English language newspaper may be the most helpful news source that will also (100) you practice in reading English.
Most daily English language newspapers are not very hard to find. They are interesting and helpful in many (101) . In some of them, you may be able to find news about your (102) country. You will find news and information about important national and international political (103) . (104) what you are interested in, you can probably find something in the newspaper about it. A(n) (105) in the newspaper may help you solve a problem. Other stories may be about good movies, concerts, or TV shows.
Usually, an English language newspaper has several (106) or parts. Each part of the newspaper (107) stories about different kinds of news. Some sections have a lot of advertisements which may be helpful if you want to save money. By reading the advertisements, you may find something you want (108) sale. Or you may find that two stories are advertising the (109) thing, but at one store the price is lower. Other sections may have (110) advertisements or have only a specific type of advertisement to interest the people.

A．/

B．one

C．same

D．very
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单项选择题

根据《中华人民共和国合同法》的规定，因国际货物买卖合同和技术进出口合同争议诉讼或者申请仲裁的期限为（）年

A．1 

B．2 

C．3 

D．4
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