Scientists have long known that nature is really a chemical factory. All living things contain chemicals that help them survive. So scientists interest in traditional medicine is not new. But it has become an urgent concern. This is because the earths supply of natural medicines may be dropping rapidly.
1. The passage indicates that ancient treatments for injury and disease were
A. much more successful than modern ones.
B. successful in all cases.
C. successful enough for humans to survive
D. of little help to humans
2. Which of the following statements is NOT true?
A. Many big and modern hospitals are expensive.
B. Modern medicines are now available all over the world.
C. Traditional medicines are neither mysterious nor magical.
D. Humans have used some kinds of medicines since earliest days.
3. It is believed by scientists that traditional medicine
A. can cure all kinds of diseases
B. are no longer useful for modern men
C. may cure some of todays most serious diseases.
D. are too cheap to be useful
4. What do the majority of the people in the world use for health care?
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