问题 单项选择题

下述关于前列腺增生说法正确的是

A.可引起尿潴留
B.多在50岁以后增生
C.发病原因与雌激素的作用无关
D.不治疗可癌变
E.增生的程度与尿流梗阻的程度成正比

答案

参考答案:A

解析: 男性35岁以后前列腺便开始增生,这是一种生理现象,是良性增生。50岁以后出现症状,称前列腺增生症,它的病因有学者认为与老年人体内雌激素与雄激素平衡失调有关。前列腺增生后引起尿路梗阻可引起尿潴留。增生的程度与尿流梗阻的程度不成正比,如果增生的腺体没有压迫 * * ,即使很大也不会引起排尿困难。另外前列腺增生不治疗不会恶变。

阅读理解

阅读理解。

     Although most people know there are Seven Wonders in the Ancient World, only few people can name

them. This is because most of them are no longer there except the pyramids. However, there is a growing

list of wonders of the world today. About nine years ago, UNESCO's World Cultural and Nature Heritage

( things that have come down to us from the past) List had 411 places and 136 countries were responsible

to protect them, and the list keeps on growing.

     Usually it is the task of a group of 21 experts to decide which places go on the list. The experts are

chosen to work for six years. Their work is to examine and discuss the suggestions from different countries.

They also manage the World Heritage Fund and have the right to decide what help to give to countries for

protection work.

     Over the past centuries, a lot of cultural or historic places have been destroyed by man or nature.

Protecting our natural and cultural heritage is a long and difficult task. Earthquakes, floods, pollution, wars,

or even tourism are some of the dangers that harm this heritage.

     When a historic place is in great danger, it is put on the World Heritage in Danger List and necessary

things will be done to protect it. Places which are on the danger list include Historic Bridges. of Indiana, St.

Elizabeth's Hospital, Rosenwald School in Southern US, etc.

1. The Seven Wonders of the Ancient World include ____ .

A. Golden Gate Bridge

B. Sydney Opera House

C. the Great Wall

D. the pyramids

2.Why does the World Cultural and Natural Heritage List keep on growing?

A. There are more cultural heritages beginning to appear.

B. More countries begin to build cultural heritages.

C. A lot of cultural or historic places have disappeared.

D. More and more cultural heritages are in great danger.

3. Which of the following statements is TRUE?

A. People can still visit the Seven Wonders of the Ancient World today.

B. Rosenwald School is a newly-built school in Southern US.

C. More places will be added to the UNESCO list.

D. The list is decided mainly by the governments of different countries.

4. What would be the best title for this passage?

A. Seven Wonders of the Ancient World

B. Experts Play an Important Role.

C. The Growing List of Wonders of the World

D. Some Historic Places in Danger

单项选择题