“逆向选择”不仅导致了“劣币驱逐良币”的结果，甚至最终会导致整个市场的消失，其对公平

一个圆柱的侧面展开图恰好是一个正方形，那么这个圆柱的底面直径与高的比是______．（π取3.14）

货物列车中关门车不得挂于车列后部（）辆车之内。

A．二

B．三

C．五

D．七

We all know how important human life is—it’s priceless. It doesn’t matter where you are from or what the color of your skins is—all people are human beings. Firstly, we can tell you that the lives of your relatives could depend on your ability to give first aid. If you think highly of human’s life, this website is for you! Here you can find information about first aid.

The very first thing that you should do when you see an accident is to evaluate the situation and prevent further dangerous incidents. First of all, you have to recognize what has happened and what the dangers to rescuers and victims are. Think about how to take care of the victims.

Helping usually takes place in very difficult conditions and injuries can be very bad. Therefore, you cannot be too afraid of making mistakes to help. Sometimes you have to face the fact that regardless of your actions and your efforts the victim’s condition might not improve—he or she could even die. In some cases even professional medical aid may not succeed. If you have done everything you think you should do, you shouldn’t feel guilty.

Do not expose yourself to danger. Giving first aid can be dangerous. While trying to help a victim, do not forget about your own safety. If something happens to you, you won’t be able to help anyone.

Call for help after you find out the condition of a victim. But remember if a victim faints due to breathing failure caused by drowning, choking or poisoning, you should first take actions that help to bring back the heart beat and breathing. While calling, talk shortly but clearly. Always provide the following information: the location of the accident, the kind of accident, the number of the injured and your full name and phone number and so on.

小题1:The passage is probably taken from _________.

A．a newspaper

B．the Internet

C．a textbook

D．a guide book小题2:The underlined word “ evaluate” in Paragraph 2 is closest in meaning to _______.

A．leave

B．protect

C．avoid

D．judge小题3: What’s the main idea of Paragraph 3?

A．You should learn some professional knowledge about first aid.

B．You shouldn’t feel guilty if you don’t know about first aid.

C．Try your best to give first aid and don’t be afraid of making mistakes

D．Don’t make mistakes when you are giving first aid.小题4:The author thinks that helping a victim can be ____________.

A．risky

B．shocking

C．exciting

D．boring小题5:It can be inferred from the passage that __________.

A．young people must learn how to give first aid

B．you should forget about your own safety while giving first aid.

C．when you see an accident you should do nothing but call the police.

D．when calling for help you should give all relevant details.

禁止任何单位或者个人截留、挪用、私分或者拖欠临时用地的相关补偿费。

中小容量异步电动机一般都有哪些保护？