阅读理解. Doctors may now be able to st

阅读理解.

Doctors may now be able to stop many heart attacks.An important new study reports that doctors have a new drug.This drug is called TPA.It may be better than any other heart drugs. Many doctors now use a drug called streptokinase.But this drug sometimes causes problems for patients. It can even cause bleeding(流血)in the brain.Some doctors do not use streptokinase.Streptokinase can save about 1/3 of the people with heart attacks.But TPA will save about 2/3. One reason TPA can help more people is because of time.This new drug is easier and faster to use.It will give doctors more time in hospitals.Then they can study the problem well.People with heart problems can also keep some TPA at home.When a heart attack starts,they can take some TPA right away.Then they will have time to get to the hospital. This is important because about 860,000 people in the United States die before they get to the hospital. This is another reason why TPA is good news for people with heart attacks.According to the study,it is much safer; it doesn't cause other problems like streptokinase does.TPA works only on the heart.It does not have an effect on the blood or cause bleeding. Doctors plan to do more studies about TPA.They need to test this new drug on many more people with heart attacks.But in a few years,many doctors and hospitals will probably start using this exciting new drug.

1.In your opinion,the best title for this passage is _____.

A.Heart Attacks B.A New Drug for Heart Attacks C.The Cause of Heart Attacks D.A Drug Called Streptokinase

2.The story says that TPA_____ .

A.is safer and faster than the old drug B.is very dangerous C.is slower and harder to use than the old drug D.causes many problems

3.This new drug may mean _____.

A.more people will die from heart attacks B.the same number of people will die from heart attacks C.fewer people will die from heart attacks D.no one will die from heart attacks

4.Which of the following is TRUE?

A.Streptokinase is the new drug for heart attacks. B.TPA can save fewer people with heart attacks than streptokinase. C.People who take TPA at home before they go to hospital must be very careful. D.Probably TPA will be widely used in America in the following years.

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