【新编大学英语】(第二册)Unit 4 A 在身体里住着个医生吗?(3/4)
来源:沪江听写酷
2014-01-20 04:00
Hints:
Romania
一处破折号
As a result, 70% of the people in the first group got much better. Only 25% of the people in the second group got better. And both groups had in fact been given the same thing - a placebo.
The placebo has been found to work with a lot of different cases. It helps such thing as seasickness, coughs, colds, and even pain after an operation. And there was an experiment done to see if a placebo could help old people stay healthy and live longer.
The test was done in Romania with 150 people over the age of 60. They were put in three groups with 50 people in each group. The first group were given nothing at all. The second group were given a placebo. The third group were given a real drug and told that it would help with the problems of old age. (In fact, it was not a drug for old age at all.) The three groups were studies for many years. The first group showed no changes from the way old people in that village had always been. The second group(with the placebo) had much better health and a lower death rate. The third group(with the real drug) showed much the same results as the group that took the placebo.
- 相关热点:
- 托福词汇