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Nowadays more and more people are talking about geneticallymodified foods ( GM foods). GM foods develop from genetically modifiedorganisms (有机体), which havehad specific changes introduced into their DNA by genetic engineeringtechniques. These techniques are much more precise where an organism is exposedto chemicals to create a non­specific but stable change. For many people, thehigh­tech production raises all kinds of environmental, ethical, health andsafety problems. Particularly in countries with long farming traditions, theidea seems against nature.

In fact, GM foods are already very much a part of our lives.They were first put on the market in 1996. A third of the corn and more thanhalf the cotton grown in the U. S. last year was the product of biotechnology,according to the Department of Agriculture. More than 65 million acres ofgenetically modified crops will be planted in the US this year. The geneticgenie is out of the bottle.

However, like any new product entering the food chain, GM foodsmust be subjected to careful testing. In wealthy countries, the debate aboutbiotech is not so fierce by the fact that they have a large number of foods tochoose from, and a supply that goes beyond the needs. In developing countriesdesperate to feed fast­growing and underfed populations, the matter is simplerand much more urgent: do the benefits of biotech outweigh the risks?

The statistics on population growth and hunger are disturbing.Last year the world's population reached 6 billion. The UN states that nearly800 million people around the world are unhealthy. About 400 million women ofchildbearing age don' t have enough iron, which means their babies are exposedto various birth defeats.As many as 100 million children suffer from vitamin Adeficiency, a leading cause of blindness.

How can biotech help? Genetic engineering is widely used toproduce plants and animals with better nutritional values. Biotechnologistshave developed genetically modified rice and they are working on other kinds ofnutritionally improved crops. Biotech can also improve farming productivity inplaces where food shortages are caused by crop damage attributable to drought,poor soil and crop viruses.

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将下列单词或词组填入空格。每空限填一词,每词只能填一次

A. weak          B. break         C. confident          D. at the end of
E. possibly       F. breath       ' G. do well in     H. hobbies       I. politely

    A headmaster is giving a speech about how to perform successfully in an interview to a
new school.

   Interviews are held so that you can learn about the school and the school can learn about you. You should spend a couple of hours getting ready for the interview carefully. Then you will ____  understand your questions better and get right answers on the day of the interview.
First find out about the school. Read the school introductions and look at the school websites. Then think about yourself- your strong points and ____  ones. Try to find a few examples you could give the interviewers.
   What else you want to tall the interviewer about yourself?. For example, you might want to speak about your interests and____  outside school. These tell the interviewer what kind of person you are. Be ready to talk about why you enjoy them.
   Dress properly on the day. Arrive a few minutes early. When you first meet the interviewer, greet him or her ____  Don't forget to smile and make eye contact. First impressions (印象) are very important. You want the interviewer to think you are ____ and friendly.
   If you get nervous, take a deep ____ to calm yourself down. Listen to the interviewer with great care. If you don't understand the question, ask the interviewer to repeat it. Last but not least, ____  the interview, don't forget to thank the interviewer and say goodbye.
   I'm sure that you will ____  your interviews. Best of luck, boys and girls!