问题 单项选择题

甲状腺功能亢进症可出现()

A.水冲脉

B.交替脉

C.重搏脉

D.奇脉

E.无脉

答案

参考答案:A

解析:甲亢时由于过多的甲状腺激素分泌在血流中,新陈代谢旺盛,心搏出量增加,可引起收缩压明显增高,但由于外周血管扩张,毛细血管阻力减少,舒张压往往下降,表现为脉压差增大,并可出现水冲脉、毛细血管搏动征以及股动脉、肱动脉等处听到枪击音和杜氏二重音。

阅读理解

阅读理解。

      Americans with small families have a small car or a large one. If both parents are working they usually have

two cars. When the family is large, one of the cars is sold (卖) and they will buy a van.

      A small car can hold (容纳) four persons and a large car can hold six persons but it is very crowed (拥挤).

A van hold seven persons easily, so a family with three children could ask their grandparents to go on a holiday

travel. They could all travel together.

      Mr. Green and his wife had a third child last year. This made them sell a second car and buy a van. The

sixth and seventh seats are used to put other things, for a family of five must carry many suitcases when they

travel. When they arrived at their grandparents' home, the suitcases are brought into the room, the two seats can

then carry the grandparents.

      Americans call vans motor homes. A motor home is always used for holidays. When a family are traveling

to the mountains or to the seaside, they can live in their motor home for a few days. All the members of a big

family can enjoy a happy life when they are traveling together.

      That is why motor homes have become popular. In America there are many parks for motor homes.

1. From the passage, a van is called _______. [ ]

A. a motor car

B. a motor home

C. a motorbike

D. a big truck

2. Before Mr. Green and his wife bought a van, they ________. [ ]

A. sold their old house

B. moved to their grandparents' house

C. built a new place for a van

D. sold their second car

3. Americans usually use motor homes ________. [ ]

A. to travel with all the family members for holiday

B. to do some shopping with all the family members

C. to visit their grandparents at weekends

D. to drive their children to school every day

4. Motor homes have become popular because ________. [ ]

A. they can take people to another city when people are free

B. they can let families have a happier life when they go out for holidays

C. some people think motor homes are cheap

D. big families can put more things in motor homes

5. What does "van" mean in the passage? _________ [ ]

A. 货车

B. 房车

C. 电动车

D. 摩托车

单项选择题 A1型题