单选题American researchers say they have found the strongest connection between ozone(臭氧) pollution and damage to health. Their findings show that short-term increases in ozone lead to higher death rates in cities. Ozone is form of oxygen. The gas is produced naturally in the upper atmosphere to protect the earth against radiation from the sun. But human activities can also create ozone in the lower atmosphere. Gasses from cars and industry react with sunlight to form this ozone. Levels usually increase in the warmer months. Ozone is the main chemical in smog, the air pollution that is a combination of fog and smoke. Ozone has been connected with heart and lung problems especially, and with higher rates of hospital cases. Researchers from Yale University and Johns Hopkins University did the study. Michelle Bell of Yale was the lead researcher. The Journal of the American Medical Association published the results. The researchers collected information on 95 American cities. These contain about 40 percent of the national population. The study compared death rates to ozone levels between 1987 and 2000. The research suggests that even a small increase in ozone, 10 parts per thousand million, can lead to higher death rates the following week. The study found that the average daily number of deaths rose point-six percent. And deaths among older people rose point-seven percent. The study is one of the largest ever done of ozone and death rates. The researchers note that ozone is widespread in the United States and many other countries. The United States Environmental Protection Agency is re-examining its air pollution rules. The limit at present for ozone is 80 parts per thousand million for an eight-hour period. Limits were higher in the past. But the researchers say they found an increase in deaths even below the present levels.

单选题After leaving the nest, a baby bird who stays ______for two or three weeks becomes an adult.

单选题The news ______ we are having a holiday tomorrow is not true.A) whichB) thatC) ifD) for

单选题Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41-45. In 1947 the pilot of a small aeroplane saw nine strange objects in the sky over Washington in the USA. He said that they looked like saucers. Newspapers printed his story under the headline "Flying Saucers". Since then, all over the world, people have reported seeing similar strange objects. No one knows what they are or where they come from. Some people say that they do not exist, but many others say that they have seen them. Usually people on the ground have seen them but not always. Airline pilots also have reported seeing them and so have astronauts — the men who fly in spaceships. Perhaps some people saw them only in their imagination. Perhaps some people made a mistake. But airline pilots and astronauts do not usually make mistakes of this kind. Captain Ed Mitchell, who was the sixth man to walk on the moon, said in 1974 that he believes that some "flying saucers" are real. Many other people now believe that these strange flying objects are visiting the earth from other worlds in space. "They have come to look at us," they say. The American government tried to find out more about these objects. It listened to a great many people who said they had seen them. But the Government Committee could not decide on what the objects were. It called them UFOs, which is short for "Unidentified Flying Objects". Some say they have seen people in the flying saucers! In 1964, a driver of a police car in New Mexico saw a UFO landing a mile away. When he reached it, there were two small figures standing near it. They looked like little men. When he reported on his radio, they got inside the object and flew away. In 1973 two men were out fishing in Mississippi. They say they saw a UFO shaped like an egg. There were three creatures like men but their skins were silver in color. They had no eyes, and their mouths were just slits (裂缝). Their noses and ears were pointed. They made the fishermen get inside the UFO for a while. Then the creatures photographed them and took them to the place where they had been fishing. There are many other similar stories. Some are probably untrue but some may be true. No one knows.

单选题Women workers wear hats ______ their hair gets caught in the machine. A. if B. in case C. unless D. because

单选题[此试题无题干]

单选题Here is a paper ______ for you to dry your hands on.

单选题This company differs from others in that ______.

单选题{{B}}Task 3{{/B}}The following is an advertisement. After reading it, you should complete the information by filling in the blanks marked 46 through 50 (in no more than 3 words) in the table below. 　　　　　　　　 {{B}}TEFL Teachers{{/B}} 　　　　　　 Summer Posts Once again we require ten excellent TEFL teachers for our summer program. Applicants should be college graduates with at least three years' experience in teaching. Applicants must have strong communication and team building skills. Our school offers a special package to qualified, TEFL experienced teachers. $1,500 and free accommodation (housing and food) for 200 hours teaching from 2 July — 24 August. Overtime available. Good possibility of longer term and permanent (a long period of time) posts. Shorter contracts available. Letters of application and C.V. to Teacher Recruitment ( Dept. E ) Chruehill House School, 40-42 Spencer square, Ramsgate, Kent (T11 9LD) Fax: (0843) 584827 Established 20 years. Recognized by the British Council and a member of Arels-Felco. {{B}}TEFL Teachers{{/B}} Qualifications required by Chruchill House School: 1. College graduates 2. Have{{U}} (46) {{/U}}experience in teaching in the minimum 3. Have strong communication and{{U}} (47) {{/U}}skills Special package to teachers: $1,500 and{{U}} (48) {{/U}} Teaching time: Teach{{U}} (49) {{/U}}hours from 2 July — 24 August Ways to contact the school: To:{{U}} (50) {{/U}} Address: 40-42 Spencer square, Ramsgate, Kent ( T11 9LD) Fax: (0843) 584827

单选题There is much discussion about whether present economic growth is desirable．A) 有很多关于现在经济增长的讨论。B) 关于现在经济是否增长，有很多讨论。C) 有很多关于目前经济增长是否理想的讨论。D) 有很多讨论认为目前的经济增长很理想。

单选题The transfer form must be signed by the ______.

单选题It was not until 3:00 pm ______ the secretary found the missing report.

单选题"Are you going to sit here and ______?" a vegetarian from the United States required.

单选题Advice given by human resources officers in large foreign companies can help you find a satisfying job. Here are some useful suggestions. Don't start writing your resume before your graduation. From the first day you enter the university, you have begun writing it. Plan to put your four years to full use so that at graduation your resume will be full of valuable experiences and remarkable academic (学术) results. Never apply to a company or for a job blindly. Find out where your interests lie and what your advantages are. Decide first what road you want to take for the rest of your life. Choose a company and a job that fits you well. Don't feel inferior (低下的) to boys if you are a girl job-hunter. Except for some physical work, girls are as capable as boys. Girls even have lots of advantages over boys. For example, girls are stronger in social communication. They are innately (天生的) skilled to express themselves effectively and to show understanding to others. They tend to be more patient, easier to get along with, and usually have better command of foreign languages.

单选题It was the man ______ on the bed with his eyes open who ______ the book open on the desk just now. A.lain; lay C.lay; lay B.lying; laid D.lying; lied

单选题You should never ______ your promise to a child.

单选题What's his name? ______. A. It John B. It's John C. He's John D. Its John

单选题While matter has been changed in form, none has been destroyed. A．当物质改变形式时，什么也没有破坏。 B．虽然物质改变了形式，但任何东西也没有被破坏。 C．当物体改变形式时，所有的东西都消灭了。 D．虽然物质改变了形式，但什么东西也没有消灭。

单选题The sun ______ in the east and sets in the west.

单选题Neither rain nor snow will keep me from going to school． A. 下雨或下雪都不能让我远离学校。 B. 下雨或下雪都不会让我不上学。 C. 无论下雨还是下雪都将阻止我上学。 D. 无论是下雨还是下雪都不能阻止我上学。