包被腮腺的是（）。 A.颈浅筋膜 B.颈深筋膜浅层 C.颈深筋膜中层 D.颈脏器筋膜

如图是蛔虫生活史，请据图回答下列问题

（1）蛔虫病是传染病，传染源是______，传播途径是______，易感人群是______．

（2）图中的[4]表示的是______．[______]表示的是成虫，图中的[1]上边较粗大两端尖直的是______虫，下边较小的，一端向内卷曲的是______虫．

（3）虫卵由图中[______]进入人体的肝脏、______、______直到咽喉后，又进入胃，最后在图中[______]______发育为成虫，靠吸食人体的______生活，同时放出一些______物质损害人体健康．

（4）图中[2]是______过程，这时此人也成为该传染病流行的______．

可能的医疗诊断是

A．缺铁性贫血

B．巨幼细胞性贫血

C．再生障碍性贫血

D．溶血性贫血

E．地中海贫血

阅读理解。

     The government may control prices when there is a problem such as rapidly increasing rents or a rise in

the cost of living. When the government controls prices, there is no longer a normal relationship between the

price of a product and the quantity consumers will buy. Government controls may help in an emergency.

However, some economists believe that the controls can have negative effects over a long period of time.

     In cities with rent control, the city government sets the maximum rent that a landlord can charge for an

apartment. Supporters of rent control argue that it protects people who are living in apartments. Their rent

cannot increase; therefore, they are not in danger of losing their homes. However, the critics say that after

a long time, rent control may have negative effects. Landlords know that they cannot increase their profits.

Therefore, they invest in other businesses where they can increase their profits. They do not invest in new

buildings which would also be rent-controlled. As a result, new apartments are not built. Many people who

need apartments cannot find any. According to the critics, the end result of rent control is a shortage of

apartments in the city.

     Some theorists argue that the minimum wage law can cause problems in the same way. The federal

government sets the minimum that an employer must pay workers. The minimum helps people who generally

look for unskilled, low paying jobs. However, if the minimum is high, employers may hire fewer workers.

They will replace workers with machinery. The price which is the wage that employers want decreases.

Thus, the critics claim, an increase in the minimum wage may cause unemployment. Some poor people may

find themselves without jobs instead of with jobs at the minimum wage.

     Supporters of the minimum wage say that it helps people keep their dignity. Because of the law, workers

cannot sell their services for less than the minimum. Furthermore, employers cannot force workers to accept

jobs at unfair wages.

     Economic theory predicts the results of economic decisions such as decisions about farm production, rent

control, and the minimum wage. The predictions may be correct only if "other things are equal". Economists

do not agree on some of the predictions. They also do not agree on the value of different decisions. Some

economists support a particular decision while others criticize it. Economists do agree, however, that there

are no simple answers to economic questions.

1. There is the possibility that setting maximum rent may ____.

A. cause a shortage of apartments

B. worry those who rent apartments as homes

C. increase the profits of landlords

D. encourage landlords to invest in building apartments

2. The problem of unemployment will arise ____.

A. if the minimum wage is set too high

B. if the minimum wage is set too low

C. if the workers are unskilled

D. if the maximum wage is set

3. The passage tells us ____.

A. the relationship between supply and demand

B. the possible results of government controls

C. the necessity of government controls

D. the urgency of getting rid of government controls

非语言交际

以木方格为骨架，双面贴板制成的门叫( )。

A．镶板门
B．夹板门
C．实心门
D．百页门