题目内容：

    Shortness of breath has many different causes, and the treatment of it is specific for each cause. 1.There are, however, some following first aid steps you can use to treat it, at least until the ambulance arrives or you're able to get the victim to a hospital.

2. The more energy you spend, the more oxygen you use and the more short of breath you feel. Think about a good workout at the gym. Exercise hard enough and you will feel short of breath. The cure? Take a break.

Let the victim sit, stand or lie where’s the most comfortable. There're lots of myths about how some body positions supposedly provide more airflow. Coaches regularly tell players to hold their arms above their heads to maximize chest expansion. Nursing staff think the ''tripod position'' is the best position. 3.

Use oxygen. This is a special case used only for people with chronic(慢性的)lung problems. If the victim has oxygen available, this is what it's for. 4. The victim may have been told by his or her doctor that too much oxygen for too long might cause more problems. Make sure the victim that sudden increases in shortness of breath are the instances in which oxygen is needed most.

Treat the cause of shortness of breath. 5. Asthma(哮喘)patients, for example, often have multiple tools and drugs to fix sudden shortness of breath. Victims of lung infections may need to see a doctor and heart attack victims may need an ambulance.

A. Have the victim rest.

B. Take more exercise at the gym.

C. The victim should use his or her oxygen as directed by a doctor.

D. There're many causes of shortness of breath and many of them are treatable.

E. The victim can try to avoid making use of his or her oxygen whenever possible.

F. Every person is different, however, so let the victim decide what position feels most comfortable.

G. In many cases, the only way to treat shortness of breath is to call 911or take the victim to a doctor.