用模拟机定位时,鼻咽癌面颈联合野的下界在第几颈椎下缘() A.7 B.5 C.6 D

题型:单项选择题

问题:

用模拟机定位时,鼻咽癌面颈联合野的下界在第几颈椎下缘()

A.7

B.5

C.6

D.4

E.3

考点:LA医师(放射治疗X刀伽马刀)LA(X刀、伽马刀)技师LA(X刀、伽马刀)技师题库
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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

题型:单项选择题

中国第一个飞上太空的宇航员杨利伟绕地球飞行1283分钟,合21小时23分.[ ]

题型:单项选择题

RNA指导的DNA合成称

A.复制
B.转录
C.翻译
D.整合
E.反转录

题型:单项选择题

对受到或者可能受到急性职业中毒危害的劳动者进行的职业健康检查和医学观察的费用,由()承担

A.劳动者

B.用人单位

C.保险公司

D.人力资源社会保障行政部门

题型:单项选择题

0f the following, the most important consideration for a tank vessel is().

A.GM

B.the vertical center of gravity

C.the longitudinal center of gravity

D.the stress on the hull

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