Too much metal in the soil is considered pollution. Yet too little metal in a person’s diet can cause health problems. An American scientist says the answer to both problems may be plants that take up large amounts of metal in their tissues. David Salt is an expert on plants at Purdue University in West Lafayette, Indiana. He is working with plants that store large amounts of metals. In recent years, scientists have shown interest in using such plants to clean up harmful waste materials. Professor Salt says such plants also could be used to improve people’s diets or even to create foods that fight cancer. Humans need a number of metals in their diets, including iron and zinc. These metals are needed in very small amounts, however. That is why they are called micronutrients. The lack of micronutrients is blamed for health problems in many developing countries. Children and pregnant women are mostly affected. Recently, Mr. Salt announced that he has identified and copied the genes from a kind of plant that stores metals in its tissues. He says his study suggests it may be possible to develop plants that contain minerals needed for good health. For example, the metal selenium is a strong anti-cancer agent. Some wild plants store selenium naturally. Mr. Salt says foods to fight cancer might be created if genes from these plants could be moved into crop plants. Locoweed, which is a common plant in the western U.S., stores selenium. Professor Salt says it may be possible to create cancer-fighting foods from it. He and scientists from a company called Unicycle Therapies have copied the gene that causes locoweed to take up selenium from the soil. Many people take pills to add important minerals or vitamins to their diet. However, Mister Salt notes that most selenium products sold in health food stores are of little use. That is because the human body can only take in and use selenium if it is in the right chemical form. The scientist says his team would like to develop a vegetable crop high in selenium. He wants to create an anti-cancer product in the foods we already eat.According to Pro. Salt, plants that take up large amounts of metal in their tissues can be used to ______. clean polluted soil and cure disease like cancer clean up harmful waste materials in soil and improve people’s diet produce large number of micronutrients such as iron and zinc create food with important minerals or vitamins

W: Can you speak up a little? I’m having difficulty hearing you. M: All right. Is that better? Q: What can we conclude from the talk? The woman doesn’t like the man. The man tries to speak more loudly. The man doesn’t want to speak up. The woman has no problem hearing the man.

W: It seems like new inventions come out almost every day. M: Yes, we may well call our time “The Age of New Inventions.“ W: I’ve heard of: “the Computer Age“, “The Internet Age“, “The IT Age“, and “The Age of Cloning“ ,but I’ve never heard theat phrase before. M: Thanks to advances in science and technology, our lives are becoming easier. W: Yes, indeed. They have not just changed our way of life, but our ideas as well. M: That’s true. However, they have also brought about some side effects. W: I agree. Just think of the harm from crime committed through the Internet. M: And children may be the most likely online victims. Nevertheless, what I’m most worried about is human cloning. W: Me, too. I fully support the idea of banning all kinds of experiments involving human cloning. M: I just can’t bear to live among clones. W: That’s totally unbearable. Q9. What’s the topic of this conversation? The advantages of modern society. The side effects of IT and cloning technology. The conveniences of modern life. Benefits and harms of new technologies.

No sooner had we reached our destination ______ we all sat down to rest. when then than until

The Students Union’s secretary and monitor ______ asked to make a speech at the meeting. is was are were

She had been looking forward to (leave) ______ the hospital wards for a holiday in the Orkneys.

Did you remember (cash) ______ a cheque for Mr. Walter last Friday?

Great changes ______(take place) in China since the People’s Republic of China was founded in 1949.

Soon he has got used to ______(live) in such a climate.

In Kansas, Missouri, a computer becomes a great help to firefighters. The computer contains information about every one of the three hundred and fifty thousand street addresses in the city. When a firefighter answers a call, the computer gives him important information about the burning building. The computer can give the location of the building and its size, type and content. In fact, the computer system has almost unlimited ways of helping the firefighter with their problems. For example, it can give medical information about invalids living in a burning building. With this information the firefighter can take special care to find these sick persons and remove them quickly and safely. The speed of a computer is amazing. Within two or three seconds after a call is received, the computer provides necessary information for the firefighters. The information is then sent to them by the radio from the computer center in the city hall. The Kansas City Computer System also contains a medical record of each of the city’s nine hundred firefighters. This kind of information is especially useful when a firefighter is injured. With this medical information doctors of hospital can treat the injured firefighter more quickly and easily. The firefighters themselves greatly appreciate the computer’s help. They can learn about possible dangers ahead of them and can prepare for them. Many times the computer information helps to save lives and property, and sometimes the lives are those of the firefighters themselves.What kind of information do the firefighters want to know first when a fire breaks out? Medical information about all the people that live in a burning building. Where the burning building is located and its size, type and content. Health record of each of the city’s nine hundred firefighters. The possible dangers ahead of them,

Short Courses In order to provide opportunities for individual or group international students and visitors to improve Chinese language proficiency and acquire a better understanding of the present-day China and traditional Chinese culture, apart from the regular programs, Binhai Normal University also offers various short programs, such as Conversational Chinese, Traditional Chinese Keep-fit Sports, Chinese Music Instruments, Chinese Painting, Chinese Calligraphy, and Culture Activity and Trip. The duration of programs can be from one week to three months. Summer Courses are from the end of June to the beginning of September; Spring Courses are in February, and March. Registration fee: US $20. Tuition fee: US $320 for four weeks, US $70 for each additional week. Accommodation fee: US $8-10/person/day for double rooms. Food expenses: Fixed meals are arranged for students of short courses. The cost is US $8-10 per person per day. Teaching materials fee: US $20 per term. Date of application: Expires by the middle of January for spring short courses. Expires by the end of June for summer short courses. Contact Address: International Education and Exchange Department Binhai Normal University Binhai, China Tel: 86-999-3869405 Fax: 86-999-3839452 E-mail: waiban@mail.binhai.edu.cn Website: http://www.binhai.edu.cn Short courses Short courses offered by【46】. Short courses provided for【47】and visitors. Reasons to offer short courses: improve Chinese language proficiency and know about【48】. The maximum of duration of programs:【49】. Expiration of the date of application of the summer courses: by【50】.

Wong Yin Yin, Bernice 30 Woo Shan Village, Sha Tin, NT Tel: 5555-5678 Pager: 5555-4321(9876) Personal Particulars Sex: Female Marital Status: Single Date of Birth: January 11, 1976 Place of Birth: Hong Kong ID Card No: K320870(8) Job objective: Business consultant Education 1994-1997: Bachelor of Business Administration Chinese University of Hong Kong, Major in Marketing, Minor in English 1988-1992: Saint Stephen’s Girls’ College Working Experience 1996: Administrative Assistant Petra Tak China Ltd 1995: Temporary Clerk Cosa Libermann HK Ltd 1994: Data Entry Clerk Wacom HK Ltd Activities and Honours 1996-7: External Vice-president Chinese University Society of Business Administration 1995-6: Team Leader Yale University & Chinese University Exchange Program 1995: Outstanding Student Tai Feng Shui Outstanding Student Services Award Skills Typing speed: 60 wpm PC Knowledge: Microsoft Word, Excel, Windows Chinese, Power Point Language: Good at Cantonese, English and Mandarin, spoken and written Interests Travelling, hiking, camping, reading and singing Referees Dr. Don Won Professor, Chinese Centre, Chinese University, Sha Tin, NT Tel: 5555-9988 Dr. Sen Hu, Lecturer, English Centre, Chinese University, Sha Tin, NT Tel: 5555-6677What position will Wong apply for?

Last year he experienced stomach trouble from which recovered completely after being treated in a hospital for ten days. 去年他患了胃病，在医院治疗10天后痊愈。去年他患胃病后，去医院治疗，花了10天才痊愈。去年他犯了胃病，在医院只治疗了10天，他的胃又好了。去年他的胃突然有毛病，到医院看了10天还没有完全好。

Your Math instructor would have been happy to give you a make-up examination, had you gone and explained that your parents were ill at the time. 如果你向你的数学老师解释你父母那时生病了，他会乐于给你一次补考机会的。只要你向你的数学老师解释了你父母那时生病的原因，他会乐于给你一次补考机会的。你的数学老师听到你父母那时生病的情况后，他会乐于给你一次补课的机会。你的数学老师会高兴你把你父母那时生病的情况告诉他，他会给你一次补课的机会。

M: Lily, are you interested in traveling? W: Yes, why? M: The school Travel Association is planning for a trip to Guilin. W: Oh, Guilin is a beautiful place. M: Do you like to join us? W: When will you set out? M: We are thinking of the National Day Holiday. Will you be free then? W: Unfortunately, I’ll take part in the 3rd Spoken English Competition in Beijing at that time. M: Oh, what a pity! Hope you a success in your competition. W. Thank you. I’ll try my best. The boy’s association. The girl’s competition. The trip to Beijing. The trip to Guilin.

What surprising items can camels chew up? Camels can chew up sharp ______.What surprising items can camels chew up?

Would you be so kind ______ to do me a favor? but and or as

The experiment is not satisfactory and its data is doubtful; we’ll have to do it ______ time. second a second the second this second

Peter ______ the driver’s test, but he was not calm enough in the last minutes. can have passed ought to have passed might have passed must have passed

The project will be finished at the end of this month; by then, we ______ for ten weeks. are working have been worked were working will have worked

We are told that the order has not yet come, so we have nothing to do now but ______. wait to be waiting to wait waiting

In many developing countries, people fall sick because ______.

Mr. Salt wants to create anti-cancer foods by ______.

To add selenium by taking pills are probably not effective because ______.

What is the main idea of the article?