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问题 单项选择题

彩色多普勒血流显像诊断二尖瓣狭窄的主要依据是（）

A.左房扩大

B.右室扩大

C.二尖瓣增厚

D.二尖瓣纤维化或钙化

E.从左房向左室的舒张期射流及瓣口左室侧的血流会聚区

答案

参考答案：E

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．fewer

B．more

C．less

D．same
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单项选择题

男性，22岁，肥胖，皮肤痤疮，血压140/90mmHg，24小时尿17-羟为25mg，给予地塞米松0.5mg，每6小时一次，共2日，再测尿17-羟为6mg/24h。最可能的诊断是（）

A.肾上腺皮质腺瘤

B.肾上腺皮质增生

C.肾上腺皮质腺癌

D.异位ACTH综合征

E.单纯性肥胖
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