Breakfast is regarded as the most important meal during the day especially for those children and teenagers who are still budding. But a recent survey among primary and middle school students in major cities across the country showed that a large proportion of students do not eat their breakfast timely and properly.
Many primary school students in Shanghai eat breakfast on their way to school during the morning rush. And since students have to arrive there before 8 a.m., some even take their first meal of the day into school to eat.
A total of 7 per cent of students questioned in a recent city survey said they didn’t eat breakfast at a regular time, either due to lack of time or appetite. Meanwhile, 80 per cent of the students said they regularly ate breakfast at home, while the remainder brought food off the street on the route to school.
National nutrition standards state that breakfast should provide 30% of the daily recommended energy and nutrients（营养学）needed for the body. Experts say that students who don’t get a proper breakfast many suffer from a lack of concentration, restlessness and fatigue. Research also shows that an improper breakfast is one of the main reasons for the rising number of obese children in the country.
Skipping breakfast can lead to over-secretion of digestive enzymes(消化酶)，which is harmful to the digestive system. This effects the appetite and children may over-eat later in the day. Medical experts also point out that people’s life styles affect their breakfast eating habits. Sleeping late and getting up late among local families has resulted in many parents neglecting their children’s breakfast. Experts are now calling for more public awareness about the importance of eating a regular breakfast, to benefit the health of local children and their parents.

1.Breakfast is ____________.

A. regarded as the most important meal only for children and teenagers.

B. always skipped by the students who are lack of appetite

C. necessary in that it can prevent you from over-eating later in the day.

D. beneficial to the children who are growing

2.Skipping breakfast can cause___________.

A. overweight

B. a bad appetite

C. an unbalanced life style

D. some serious diseases

3.Breakfast provides nearly _________of the energy and nutrients need for the body daily.

A .half B. a quarterC. one third D. all

4.According to a recent survey,_____________.

A. a total of 7 percent of students eat breakfast on the way to school

B. less than half of students regularly eat breakfast at home

C. more than 10 percent of students buy food off the street as their breakfast

D. the majority of students don’t have breakfast regularly

5.The main purpose of this passage is to _____________.

A. analyze the results of a recent survey

B. blame the parents for their children’s skipping breakfast

C. call for pubic awareness about the importance of eating a regular breakfast

D. tell people why some children and teenagers who are still budding are overweight.

　　Exercise is one of the few factors with a positive role in long-term maintenance of body weight.Unfortunately, that message has not gotten through to the average American, who would rather try switching to "light" beer and low-calorie bread than increase physical exertion. The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet.
　　In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts;for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry (小甜饼). Even exercise professionals concede half a point here. "Exercise by itself is a very tough way to lose weight," says York Onnen, program director of the President's Council on Physical Fitness and Sports.
　　Still, exercise's supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight.
　　If you have been sedentary (极少活动的) and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year's time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight.

1. What is said about the average American in the passage?

A They tend to exaggerate the healthful effect of "light" beer.

B They usually ignore the effect of exercise on losing weight.

C They prefer "light" beer and low-calorie bread to other drinks and food.

D They know the factors that play a positive role in keeping down body weight.

2. Some people dislike exercise because

A they think it is physically exhausting

B they find it hard to exercise while on a diet

C they don't think it possible to walk 3 miles every day

D they find consulting caloric-expenditure charts troublesome

3. "Even exercise professionals concede half a point here" (Line 3, Para. 2) means "They

A agree that the calories in a small piece of pastry can be difficult to work off by exercise

B partially believe diet plays a supporting role in weight reduction

C are not fully convinced that dieting can help maintain one's new weight

D are not sufficiently informed of the positive role of exercise in losing weight

4. What was confirmed by the Boston University Medical Center's study?

A Controlling one's calorie intake is more important than doing exercise.

B Even occasional exercise can help reduce weight.

C Weight reduction is impossible without exercise.

D One could lose ten pounds in a year's time if there's no increase in food intake.

5. What is the author's purpose in writing this article?

A To justify the study of the Boston University Medical Center.

B To stress the importance of maintaining proper weight.

C To support the statement made by York Onnen.

D To show the most effective way to lose weight.

　　More and more, the operations of our businesses, governments, and financial institutions are controlled by information that exists only inside computer memories. Anyone clever enough to modify this information for his own purposes can reap big reward. Even worse, a number of people who have done this and been caught at it have managed to get away without punishment.
　　It’s easy for computer crimes to go undetected if no one checks up on what the computer is doing. But even if the crime is detected, the criminal may walk away not only unpunished but with a glowing recommendation from his former employers.
　　Of course, we have no statistics on crimes that go undetected. But it’s disturbing to note how many of the crimes we do know about were detected by accident, not by systematic inspections or other security procedures. The computer criminals who have been caught may have been the victims of uncommonly bad luck.
　　Unlike other lawbreakers, who must leave the country, commit suicide, or go to jail, computer criminals sometimes escape punishment, demanding not only that they not be charged but that they be given good recommendations and perhaps other benefits. All too often, their demands have been met.
　　Why? Because company executives are afraid of the bad publicity that would result if the public found out t