问题 单项选择题

下列哪项不是原发性肾小球疾病的光镜下病理特点()

A.膜性肾病为不伴细胞增生的弥漫性肾小球毛细血管基底膜增厚

B.微小病变病无明显异常,电镜下可见上皮细胞肿胀、足突广泛融合

C.急进性肾炎是50%以上肾小球的肾小囊中有大新月体形成

D.急性链球菌感染后肾小球肾炎是弥漫增生性肾小球炎症(内皮与系膜细胞增生)

E.系膜增生性肾炎是系膜细胞及肾小球基底膜不同程度的弥漫增生

答案

参考答案:E

解析:系膜增生性肾炎光镜下可见肾小球系膜细胞和系膜基质弥漫增生,而肾小球基底膜无增生病变。基底膜增生是膜性肾病的特征。本题需考生结合肾小球发生病变部位的不同(上皮细胞及足突、基底膜、毛细血管内皮、系膜区等),来记忆各型肾小球病变的名称。故本题选E。

单项选择题
阅读理解

阅读理解。

     Without proper planning, tourism can cause problems. For example, too many tourists can crowd public

places that are also enjoyed by the inhabitants of a country. If tourists create too much traffic, the inhabitants

become annoyed and unhappy. They began to dislike tourists and to treat them impolitely. They forget how

much tourism can help the country's economy. It is important to think about the people of a destination

country and how tourism affects them. Tourism should help a country keep the customs and beauty that

attract tourists. Tourism should also advance the wealth and happiness of local inhabitants.

     Too much tourism can be a problem. If tourism grows too quickly, people must leave other jobs to work

in the tourism industry. This means that other parts of the country's economy can suffer.

     On the other hand, if there is not enough tourism, people can lose jobs. Business can also lose money. It

costs a great deal of money to build large hotels, airports, air terminals, first-class roads, and other support

facilities needed by tourist attractions. For example, a major international class tourism hotel can cost as much

as 50 thousand dollars per room to build. If this room is not used most of the time, the owner of the hotel will

lose money.

     Building a hotel is just a beginning. There must be many support facilities as well, including roads to get to

the hotel, electricity, sewers to handle waste, and water. All of these support facilities cost money. If they are

not used because there are not enough tourists, jobs and money are lost.

1. Which of the following do you think has been discussed in the part before this selection?

A. It is extremely important to develop tourism.

B. Building roads and hotel is essential.

C. Support facilities are highly necessary.

D. Planning is of great important to tourism.

2. The underlined word "inhabitants" probably means _____.

A. tourists

B. passengers

C. population

D. citizens

3. Too much tourism can cause all these problems except _____.

A. a bad effect on other industries

B. a change of tourists' customs

C. over-crowdedness of places of interest

D. pressure on traffic

4. It can be inferred from the text that _____.

A. the author doesn't like tourism developing so fast

B. local people will benefit from tourist attraction

C. other parts of a country's economy won't benefit from tourism much

D. we can't build too many support facilities

5. The author thinks it is good for local people to know that tourism will _____.

A. waste a lot of money

B. weaken their economy

C. help establish their customs

D. help improve their life