"气之根"指的是( )A．肝 B．心 C．脾 D．肺 E．肾

甲、乙两个数的和是23.126，如果把甲数的小数点向左移动一位，得到的数为乙数的3倍，则甲数是______．

I don' t like staying at home. That always makes me _____ lonely (孤独的).  [ ]

A. feel          

B. to feel         

C. feeling       

D. felt

CPR is cardiopulmonary resuscitation (心肺复苏). It forces air into the lungs and pumps(用泵抽) blood and oxygen to the brain in order to increase the chances that a person whose heart stops will survive. It increases the chances that he or she will suffer little or no brain damage.

The American Heart Association suggests two ways to perform CPR. One combines the use of hands to pump the victim’s chest with rescue breathing. The other method is called “Hands-Only CPR”, which is for people who are unwilling or unable to perform rescue breathing. Some people fear infection(感染). Others say they are afraid of making the patient worse.

But the American Heart Association strongly asks people in contact with a victim(受害者) to take action and tells how to take it. It says you can recognize a person needing CPR. He or she is unconscious(无意识) -- unable to communicate or react to surroundings or speech. His or her skin has lost color. The person is not breathing. If such conditions describe the situation, chances are the heart has stopped beating.

You should act by calling for help, or sending someone else. Even if you cannot do mouth-to-mouth rescue breathing, you can perform Hands-Only CPR. You can do chest compressions(压迫) that help to keep blood flowing to the brain and the heart. To perform the compressions, place one hand over the other and press firmly on the center of the victim’s chest. Push down about five centimeters. Aim for one hundred compressions each minute.

Doctor Sayre suggests that medical workers do both the breathing method and chest compressions as usual. He says some victims, including babies, need the mouth-to-mouth breathing with the compressions. Still, the doctor says it is better to do just chest compressions than to do nothing.

卵巢恶性肿瘤的化学药物治疗，是非常重要的辅助治疗。

减震器在汽车行驶中发热，表示该减震器已经损坏。