[单项选择]

{{B}}TEXT A{{/B}}

How much sleep do we need It is probably true to say that up to thirty years ago not only could we not answer this question, but we could see no research tools which might eventually enable us to do so. Since then, there have been important developments which have changed the picture; in particular new forms and techniques of neurophysiological measurement have emerged, and secondly, experimental psychology has developed better methods of evaluating human performance and behaviour. Studies, for example, of body and eye movements, of sensory thresholds, and above all, of the electrical potentials of the brain during sleep, encourage us to think that we may be able to assess with useful accuracy the depth of quality of sleep. In carefully controlled experiments also the amount of sleep has been carried to find the effects of lack of sleep upon performance and upon physiological changes in the body, especially
A. For both of theme only fatigue can promote sleep.
B. For both of them, overeating may promote sleep.
C. For both of them, they wake only to satisfy their bodily needs.
D. For both of them, they need to be completely satisfied to promote sleep.

[单项选择]

How much sleep do we need It is probably true to say that up to thirty years ago not only could we not answer this question, but we could see no research tools which might eventually enable us to do so. Since then, there have been important developments which have changed the picture; in particular new forms and techniques of neurophysiological measurement have emerged, and secondly, experimental psychology has developed better methods of evaluating human performance and behaviour. Studies, for example, of body and eye movements, of sensory thresholds, and above all, of the electrical potentials of the brain during sleep, encourage us to think that we may be able to assess with useful accuracy the depth of quality of sleep. In carefully controlled experiments also the amount of sleep has been carried to find the effects of lack of sleep upon performance and upon physiological changes in the body, especially
A. Advancement in neurophysiological measurement.
B. Improvement in experimental psychology.
C. Studies of the electrical potentials of the brain.
D. Experiments of physiological changes in the body.

[填空题]How do we dream
We often dream （）.

[单项选择]How do we choose our favorite colors
A. Our favorite color is inborn.
B. We choose our favorite color as we grow up.
C. With the instruction of our parents we select them.
D. We get them by chance.

[单项选择]

Infrared Scanning Technology

How do we get more young people to increase their consumption of iron-rich foods Many nutritionists are advocating the fortification of a number of foods. This may help, but I contend that we should also intensify our efforts in nutrition education among our young people. I simply do not believe the argument that it is futile (徒劳的) to try to change eating habits. Once an intelligent person--and this includes adolescents--understands the need for a healthy diet, I think he 6r she will act accordingly. As for specific actions: I suggest that blood hemoglobin (血红蛋白) should be checked as a routine part of a youngster’s yearly physical. It should contain at least 11 grams per 100 milliliters of blood for a girl and at least 12 grams for a boy. If it is any lower, the physician probably will prescribe an easily absorbed iron supplement.
Adolescents--and everyone else--should cut out highly proce
A. the importance of diet
B. the need of iron
C. adolescents’ eating habits
D. blood hemoglobin

[单项选择]How much commission do you need to pay altogether
[*]

[单项选择] Infrared Scanning Technology

How do we get more young people to increase their consumption of iron-rich foods Many nutritionists are advocating the fortification of a number of foods. This may help, but I contend that we should also intensify our efforts in nutrition education among our young people. I simply do not believe the argument that it is futile (徒劳的) to try to change eating habits. Once an intelligent person--and this includes adolescents--understands the need for a healthy diet, I think he 6r she will act accordingly. As for specific actions: I suggest that blood hemoglobin (血红蛋白) should be checked as a routine part of a youngster’s yearly physical. It should contain at least 11 grams per 100 milliliters of blood for a girl and at least 12 grams for a boy. If it is any lower, the physician probably will prescribe an easily absorbed iron supplement.

Adolescents--and everyone else--should cut out highly processed foods
A. check blood hemoglobin yearly
B. be on a strictly vegetarian diet
C. lose weight
D. do some more studies on hemoglobin

[填空题]How do we always view the offenses of others

[单项选择] The Function of Tomatoes How do we love tomatoes Let’’s count the ways: we love them in pasta, on pizza, in juice, in salad and soup, sliced on sandwiches, stuffed with tuna, even dried and baked in bagels, but most of all, we love them right off vine—ripe, red, and delicious. While tomato lovers don’’t need an excuse for eating them by the bushel (蒲式耳), now there’’s even more reason to savor these delicious fruits. Evidence is mounting that people who eat tomatoes have a substantially lower risk for cancer. In a thousand-person study of eating habits and health, Harvard Medical School researchers found that those who ate tomatoes every week had the lowest chance of dying form cancer. Recently, a study of 48, 000 American men showed a 21 to 34 percent lower risk for prostate cancer(前列腺癌)among those who consumed tomatoes, tomato sauce, or pizza more than twice a week. And in study of men and women in Italy, eating seven or more serving of
A. a 21 to 34 percent
B. a 30 to 60 percent
C. a 21 to 30 percent
D. a 34 to 60 percent