下列设备中,使用了内燃机的是( ) A.电扇 B.洗衣机 C.轮船 D.自行车

题型:选择题

问题:

下列设备中,使用了内燃机的是(  )

A.电扇

B.洗衣机

C.轮船

D.自行车

考点:热机的定义
题型:选择题

Do your children always sit still and watch TV? If so, you should be very alert!

Nowadays, children watch television for long hours. They often spend evenings watching their favorite programs on TV. Sometimes they might stay up late to watch TV. Their addiction to television results in their not having time to play or do exercise. They should go outside with friends or spend time reading books. Moreover, watching television too much is harmful to their eyesight.

Researchers claim that attention deficit disorders in children are a result of watching too much television. They say that watching television leads to a developmental disorder in the part of the brain which is responsible for language skills. Children who watch television more and read less have greater difficulty paying attention and concentrating. Children that spend long hours watching television are more likely to be affected by attention deficit disorders.

Television is one form of media which is used to show all kinds of products. Watching too much television can lead to early exposure to a wide variety of things. Television advertisements may cause children to behave incorrectly or damage themselves. Advertisements about fast food, cold drinks or other such products that are not good for children’s health can have a bad effect on them. Some TV shows and films also affect how children think and behave.

Studies in psychology have shown that certain programs can have a long-lasting effect on children’s minds. Horror scenes and other frightening shows can have a negative effect on the minds of children watching them.

Television is a means of recreation but watching it too often is harmful to children’s physical and mental health. You need to help you children deep a balance of everything in life.

小题1:The underlined word “deficit ” in the third paragraph most probably means _____.

A.need

B.habit

C.fear

D.lack小题2:It’s implied in the last paragraph that you should ______.

A.decide on when children can watch television

B.give children more time to play

C.help you children balance everyday life

D.stop you children from watching TV小题3:What is the passage mainly about?

A.The bad effects watching TV has on children.

B.How many hours children should spend watching TV.

C.How advertisements affect children’s behavior.

D.What scenes children should not watch on TV.小题4:Which of the following are the effects of watching too much TV according to the passage?

a. causing children to have less time to read good books.

b. making children behave improperly

c. harming children’s eyesight

d. affecting the parent-child relationship

A.a, b, d

B.b, c, d

C.a, b, c

D.a, c, d

题型:选择题

下列说法正确的是()

A.介入放射学分血管介入和非血管介入

B.经皮腰间盘切吸术是血管介入

C.经皮腰间盘切吸术不是血管介入

D.PTCD不属于血管介入

E.肝癌动脉化疗栓塞是血管介入

题型:选择题

From: Helen Pierce, Dallas Engineering
To: Yolanda Spencer, Opto Technology
Subject: Meeting
Dear Yolanda,
I am writing to let you know I (150) at the Crowne Hotel on Fort Street. I arrived on Monday night tc attend an industry conference. I will head back to Dallas on Saturday morning, so I hope we can meet up sometime on Friday for coffee in the city. Do you think this will be possible Please (151) to this email to let me know about your availability. If we’re unable to meet this time, then hopefully we can get together at next week’s tradeshow in Pasadena.
To be honest, my motive for meeting with you is to lure you to Dallas Engineering. I would love the opportunity to speak to you in person about the new (152) in our executive team. You are just the sort of talented and hard-working professional that we are looking for, and I’m sure you can do well at our firm. During our meeting, I hope I can convince you to consider moving to Dallas!
Cheers,
Helen Pierce
Dallas Engineering

A.answer

B.post

C.submit

D.respond

题型:选择题

某工厂新近购买一台标准电能表,用作企业的最高标准以检验本厂生产的电能表,按照我国《计量法》规定,该标准电能表属于强制检定的范围,必须经有关机构检定合格后方能使用,为此,有关人员了解到。 83.该标准的电表的强制检定应由()具体执行。

A.法定计量检定机构

B.授权的检定机构

C.国务院计量行政主管部门

D.工厂所在地区县级以上人民政府主管部门

题型:选择题

()男女在形态与机能上逐渐出现明显的差异,运动能力也不同

A、初中阶段后

B、高中阶段后

C、身体发育成熟后

D、青春期开始后

更多题库