The first paragraph of the passage suggests ________.
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1 .According to the last two paragraphs, Sindler believes that
A calorie restriction is very important to young people B seeing the effect of a diet, people will eat less than normal. C dieting is not a good method to give us health and a long life. D drugs do not have the effects of calorie restriction.
2 .The word “accident”（Para. 2）can be best replaced by ________.
A Because the light was on. B Because it was very bright. C Because it was barium compound D Because of X-rays.
3 .X-rays can pass _____through materials that normally stop light.
A by B through C with D along
4 .What is the main idea of the passage?
A Roentgen discovered X-rays. B The usage of X-rays C An experiment made by Roentgen D The discovery of X-rays and its medical usage.
5 .The passage is mainly about ____________.
A how to deal with old age. B how to cultivate impersonal interests C how to get along with your children D how to deal with old people.
7 .The second paragraph of the passage suggests _______.
A one should leave his grown-up children to live on their own as early as possible. B too much concern for grown-up children may likely make you a burden to them. C nowadays grown-up children are usually indifferent to their parents and grandparents. D modern grown-up children want to live a differe...
8 .According to the passage, which of the following would the author advise old people to do?
A Try to mix with the young. B Avoid strong personal emotions. C Try to remain as active as you were when you were young. D Find out your own interests and try to be actively engaged in them.
9 ._________
A Environmentally induced cancers, for example, commonly involve latency periods of 15 to 30 years or more. B In addition, many different causes, environmental or otherwise, may produce identical illnesses. C However, the reverse is true. D nervous systems are commonly affected by different agents i...
