分泌碱性粘液,保护胃粘膜的细胞是()。 A.胃主细胞 B.胃粘液细胞 C.胃腺壁细胞

题型:单项选择题 B型题

问题:

分泌碱性粘液,保护胃粘膜的细胞是()。

A.胃主细胞

B.胃粘液细胞

C.胃腺壁细胞

D.胃窦部G细胞

E.胃壁平滑肌细胞

考点:骨外科学相关专业知识骨外科学相关专业知识综合复习题骨外科学相关专业知识综合复习题题库
题型:单项选择题 B型题

阅读理解。

     American boys and girls love to watch TV. Some children spend six hours a day in front of the TV set.

Some children even watch TV for eight hours or more on Saturday. Many parents let their children watch TV

only during certain (特定) hours.

     TV shows are like books or films. A child can learn bad things from some of them and good things from

others. Some shows help children to understand the news from the world. Some programs (节目) show people and places from other countries or other times in history. With TV a child does not have to go to the zoo to see

animals or to the sea to see a ship (轮船). Boys and girls can see a play or a basketball game at home. Some

programs even teach children how to cook or how to use tools (工具).

     It is fun to watch TV, but it's also fun to play games, to read a book or to visit friends.

1. American boys and girls spend _____.

A. six hours at school on Saturday

B. four or six hours on TV shows on Saturday

C. eight hours or more watching TV every day

D. very long time in front of the TV sets at the weekend

2. Many parents _____.

A. let their children learn things from TV but not going to schools

B. ask their children to watch TV during the certain time

C. think that TV programs are better than (好于…) the textbooks

D. let their children to watch what they like

3. With TV, boys and girls can _____.

A. learn good things and bad things

B. only learn interesting news and places

C. learn from each other (相互) and play basketball games at home

D. read books at home and see movies in the cinema

4. Boys and girls like to watch TV because _____.

A. they do nothing at home

B. their parents like TV programs

C. they don't want to play games or visit friends

D. it is fun

5. The writer's opinion is _____.

A. boys and girls should spend some time both on TV and other things

B. children shouldn't watch TV shows

C. parents can't buy TV sets

D. children should stop watching TV

题型:单项选择题 B型题

下列有关的生活实例与其所运用的物理知识的说法中,错误的是(  )

A.用吸盘挂钩挂衣服,利用了大气压强的作用

B.修盘山公路,利用了斜面越长越省力的道理

C.坐沙发比坐木凳舒服,利用了减小压力来减小压强的道理

D.制造形状上下不对称的机翼,利用了流体压强与流速的关系图1

题型:单项选择题 B型题

下列哪项不符合肺心病的体征()。

A.颈静脉怒张

B.心脏浊音界向左下扩大

C.肝颈静脉回流征阳性

D.肺动脉瓣区第二心音亢进

E.剑突下示心脏搏动

题型:单项选择题 B型题

民族区域自治是解决我国民族问题的()。

A.基本政策和基本政治制度

B.地方性的政策

C.地方性的制度

D.特殊时期的政策与制度

题型:单项选择题 B型题

已知60钴源皮距(标)75cm,最大方野边长的1/2为10cm,所需斗篷照射野源皮距150cm,求斗篷野照射野边长1/2为()

A.15cm

B.20cm

C.25cm

D.30cm

E.40cm

更多题库