To buy food or daily necessities, large grocery stores or supermarkets are good choices.（)

A.Because things there are in great variety

B.Because the prices there are higher

C.Because of the after-sale service

D.Because they are often nearer

ver conventionally grown and marketed food products are now being debated. Advocates of organic foods frequently proclaim that such products are safer and more nutritious than others.

The growing interest of consumers in the safety and nutritional quality of the typical North American diet is a welcome development. However, much of this interest has been sparked by sweeping claims that the food supply is unsafe or inadequate in meeting nutritional needs. Although most of these claims are not supported by scientific evidence, the greater number of written material advancing such claims make it difficult for the general public to sep arate fact from fiction. As a result, claims that eating a diet consisting entirely of organically grown foods prevents or cures disease or provides other benefits to health have become widely publicized and form. the basis for folklore.

Almost daily the public is surrounded by claims for "no-aging" diets, new vitamins, and other wonder foods. There are numerous unsubstantiated reports that natural vitamins are superior to synthetic ones, that crops grown with organic fertilizers are nutritionally superior to chose with chemical fertilizers, that untreated grains are better than fumigated grains, and the like.

One thing that most organically grown food products seem to have in common is that they cost more than conventionally grown foods. But in many cases consumers are misled if they believe organic foods can maintain health and provide better nutritional quality than conventionally grown foods. So there is real cause for concern ff consumers, particularly those with limited incomes, distrust the regular food supply and buy only expensive organic foods instead.

The author implies that there is cause for concern if consumers with limit ed incomes buy organic foods instead of conventionally grown foods be cause ______ .

A．organic goods can be more expensive but are often no better than conventionally grown foods

B．many organic foods are actually less nutritious than similar conventionally grown foods

C．conventionally grown foods are more readily available than organic foods

D．too many farmers will stop using conventional methods to grow food crops

ad a healthy life.

Nowadays, people are very busy. Often, both parents work outside the home. Children are expected to take on more responsibility at home to help their parents. They also have sporting and leisure activities as well as school expectations.

The busyness also adds another factor: the need to use cars to get from one place to another quickly.

Today, society places a lot of emphasis on technology. Computers, DVDs, CDs, television, PlayStations and Xboxes have become major leisure activities, rather than traditional more active pursuits. This has led to a more sedentary lifestyle.

The media provide entertainment and information. (79)Unfortunately, they also promote fast food which fits easily into busy lifestyles. It is much more convenient at times to buy a quick takeaway rather than prepare a meal. The media constantly bombard(轰炸) their audience with "perfect" body images, the need to buy the most fashionable clothes, the most up-to-date computer games, the best places to visit and the best things to do.

Environments vary. We may be exposed to pollution, such as cigarette smoke. This can be harmful to people who suffer from breathing difficulties. (80)Environments where passive smoking is unavoidable make it difficult to lead a healthy life.

Perhaps the important factor influencing healthy lifestyles is motivation, or the desire to be healthy. Any person who wants to be healthy will find a way to be healthy—if he/she is motivated enough!

The passage is mainly about______.

A．benefits of a healthy life style

B．demands of daily life

C．factors affecting a healthy lifestyle

D．a positive approach to healthy living

oblem of pollution. Pollution is caused either by man's release of completely new and often artificial (人造) substances into the environment, or by releasing greatly increased amounts of a natural substance (物质), such as oil from oil tankers into the sea.

Whatever its underlying reasons, there is no doubt that much of the pollution caused could be controlled if only companies, individuals and governments Would make more efforts. In the home there is an obvious need to control litter and waste. Food comes wrapped up three or four times in packages that all have to be disposed off drinks are increasingly sold in bottles or tins which cannot be reused. This not only causes a litter problem, but also is a great waste of resources, in terms of glass, metal and paper. Advertising has helped this process by persuading many of us no only to buy thing we neither want nor need, but also to throw away much of what we do buy. Pollution and waste combine to be a problem everyone can help to solve by curing out unnecessary buying, excess use and careless disposal (处理) of the products we use in our daily lives.

The main cause of pollution is ______.

A．the release of artificial or natural substances into the environment

B．the production of new industrial goods

C．increased amounts of a natural substance

D．our ever-increasing population

A.15%

B.17%

C.20%

D.11%

A.buy

B.need

C.do

D.recommend

e problem of pollution.Pollution is caused either by man s release of completely new and often artificial substances into the environment, or by releasing greatly increased amounts of a natural substance, such as oil tankers into the sea

Whatever it' s underlying reasons, there is no doubt that much of the pollution caused could be controlled if only companies, individuals and governments would make more efforts In the home there is an obvious need to control litter and waste Food comes wrapped up three or four times in packages that all have to be disposed of: drinks are increa singly sold in bottles or tins which cannot be reused.This not only causes a litter problem, but also is a great waste of resources, in term of glass metals and paper.Advertising has helped this process by persuading many of us not only to buy things we neither want nor need, but also to throw away much of what we do buy Pollution and waste combine to be a problem everyone can help to solve by cutting out unnecessary buying, excess consumption and careless disposal of the products we use in our daily lives.

21.The main cause of pollution is

A the release of artificial or natural substances into the envIronment

B.the production of new industrial goods

C.increased amounts of a natural substance

22.Much of the pol lut ion could be controlled if only

A.people would pay more attention to the problem

B.governments would take effective measures

C.all sides concerned would make more efforts

23.Food packages, bottles and tins for drinks can cause

A.air and water pollution

B.both a litter problem and a waster of resources

C.to pay for the service

24.Which of the following cannot help solving the problem of pollution？()

A.Cutting out unnecessary buying

B.Eating.

C.Reduce excess us

25.What does the underlined word "litter" mean in Para.2？()

A.not many

B.serious problem

C.bits of waste things

A. no less than

B. many more

C. much less

D. less than

A．family members

B．favorite food

C．weather

D．income