【正文】 tain hazardous chemicals. Scientists studying water in the San Francisco Bay reported in 1996 that 70 percent of the pollutants could be traced to household waste. Farmers have been criticized for overusing herbicides and pesticides, chemicals that kill weeds and insects but insects but that pollute water as well. Farmers also use nitrates, nitrogenrich fertilizer that helps plants grow but that can wreak havoc (大破壞) on the environment. Nitrates are swept away by surface runoff to lakes and seas. Too many nitrates “over瞖nrich” these bodies of water, encouraging the buildup of algae, or microscopic plants that live on the surface of the water. Algae deprive the water of oxygen that fish need to survive, at times choking off life in an entire body of water.WHAT’S THE SOLUTION? Water expert Gleick advocates conservation and local solutions to waterrelated problems。 governments, for instance, would be better off building smallscale dams rather than huge and disruptive projects like the one that ruined the Aral Sea. “More than 1 billion people worldwide don’t have access to basic clean drinking water,” says Gleick. “There has to be a strong push on the part of everyone—governments and ordinary people—to make sure we have a resource so fundamental to life.” 提示:在實(shí)考試卷中，810題在答題卡1上。 1. That the huge water projects have diverted the rivers causes the Aral Sea to shrink. 2. The construction of massive dams and irrigation projects does more good than harm. 3. The chief causes of water shortage are population growth and water pollution. 4. The problems Americans face concerning water are ground water shrinkage and tap water pollution. 5. According to the passage all water pollutants e from household waste. 6. The people living in the United States will not be faced with water shortages. 7. Water expert Gleick has e up with the best solution to water—related problems. 8. According to Peter H. Gleick, by the year 2025, as many as of the world’s people will suffer from water shortages. 9. Two瞭hirds of the freshwater on Earth is locked in . 10. In developed countries, before toxic chemicals are released into rivers and lakes, they should be treated in order to avoid .Part Ⅲ Listening Comprehension（35 minutes） Section A Directions:In this section, you will hear 8 short conversations and 2 long the end of each conversation,one or more questions will be asked about what was the conversation and the questions will be spoken only each question there will be a pause. During the pause, you must read the four choices marked A),B),C) and D),and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre. 11. A) Talk to his sister. B) Look at a map. C) Go on a diet. D) Tell the man why. 12. A) Do whatever has been planned. B) Have a piic and go camping. C) Eat out and see a play. D) Go to the beach. 13. A) The weather was better. B) The weather was a little bit warmer. C) The weather was a little bit colder. D) The weather was cooler than expected. 14. A) Mr. Steward is honest. B) Mr. Steward looks honest. C) Mr. Steward looks dishonest. D) Mr. Steward is dishonest. 15. A) He did quite well with it. B) He has money problem now. C) He is in need of qualified staff. D) He could not carry it on any more. 16. A) ＄. B) ＄. C) ＄. D) ＄. 17. A) They will spend the summer in Italy. B) They are both from Europe. C) They are both students. D) They are both interested in art. 18. A) Not getting what she wants. B) A custom that is new to her. C) Calling up customers. D) Some of her good friends. Question 19 to 22 are based on the conversation you have just heard. 19. A) A more economical diesel fuel. B) Characteristics of a new type of fuel. C) Where a new energy source is located. D) How to develop alternative energy sources. 20. A) He’s studying for a test. B) He lost his notes. C) He missed the class. D) He’s doing research on alternative. 21. A) It will reduce the amount of pollutants in the air. B) It will increase the amount of unpleasant odors from vehicles. C) It will eventually destroy the ozone layer. D) It will reduce the cost of running large vehicles. 22. A) To help him explain the information to his roommate. B) To help him write a paper. C) To prepare for a test. D) To tell her if the notes are accurate. Question 23 to 25 are based on the conversation you have just heard. 23. A) The woman has passed her final exams. B) The woman wants to know how to write term papers. C) The woman is going to visit Gettysburg. D) The man introduces his experiences in Gettysburg. 24. A) Because her parents like traveling. B) Because her parents like history. C) Because traveling in such places costs less. D) Because her parents want to reinforce the stuff they learned in school about history. 25. A) It is far away from the city she lives in. B) It is a place where many great people were born. C) It has a certain political influences in the United States right after the battle at Gettysburg. D) It is worth reading history about Gettysburg. Section B Directions:In this section,you will hear 3 short the end of each passage,you will hear some the passage and the questions will be spoken only you hear a question,you must choose the best answer from the four choices marked A),B),C) and D) .Then mark the corresponding letter on Answer sheet 2 with a single line through the centre. Passage One Questions 26 to 28 are based on the passage you have just heard. 26. A) A plate. B) A pear. C) A ball. D) An egg. 27. A) How most mathematicians work. B) Accidental discovery about the earth’s shape. C) How to track an orbit. D) How astronauts use puters to measure the size of satellite. 28. A) To prove the earth was round. B) To gather information for planning space flights. C) Because all spacecraft had to carry puters. D) Because it can measure the size of the satellite.Passage Two Questions 29 to 31 are based on the passage you have just heard. 29. A) About 30,000. B) Around 300,000. C) Over 300,000. D) M