题目
题型：不详难度：来源：
B
A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases the risk.
Research from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma (黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.
Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.
But questions have been raised about sunscreen and whether it may have the opposite effect by allowing people to remain exposed to the sun longer without burning.
The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer---are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.
The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.
60．The underlined word “flaws” in the 2nd paragraph most probably means _________.
A．evidences B．facts C．faults D．failures
61．People with fair skin and freckles ________.
A．seldom use sunscreen B．are more in danger of skin cancer
C．can be free from the harm of the sun D．often expose themselves to the sun
62．We can learn from the passage that _________.
A．sunscreen users get skin cancer more often
B．the volunteers have proved the effect of the sunscreen
C．the new study has based on the experiences of volunteers
D．the number of skin cancer patients is increasing in America
63．Which of the following is the best title of the passage?
A．Sunscreen to Prevent Skin Cancer B．Sunscreen to Increase Skin Cancer
C．Skin Cancer Caused by Sunscreen D．Skin Cancer Caused by Freckles
答案
60--63 CBDA
解析
核心考点
试题【B A new study has found no evidence that sunscreen, commonly used to reduce the 】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
C
Wind is the movement of air from an area of high pressure to an area of low pressure. In fact, wind exists because the sun unequally heats the surface of the Earth. As hot air rises, cooler air moves in to fill the gap. As long as the sun shines, the wind will blow. And as long as the wind blows, people will manage it to power their lives.
Ancient sailors used sails to capture the wind and explore the world. Farmers once used windmills to grind their grains and pump water. Today, more and more people are using wind turbines to make electricity from the breeze. Over the past decade, wind turbine use has increased at more than 25 percent a year. Still, it only provides a small part of the world"s energy.
Most wind energy comes from turbines that can be as tall as a 20-story building and have three 200-foot-long (60-meter-long) blades. These devices look like giant airplane propellers(螺桨)on a stick. The wind spins the blades, which turn a shaft connected to a generator.
The biggest wind turbines generate enough electricity to supply about 600 U.S. homes. Wind farms have tens and sometimes hundreds of these turbines lined up together in particularly windy spots, like along a ridge. Smaller turbines set up in a backyard can produce enough electricity for a single home or small business.
Wind is a clean source of renewable energy that produces no air or water pollution. And since the wind is free, operational costs are nearly zero once a turbine is erected. Mass production and technology advances are making turbines cheaper, and many governments decrease tax to encourage wind-energy development.
Some people think wind turbines are ugly and complain about the noise the machines make. The slowly rotating blades(螺旋风片) can also kill birds and bats, but not nearly as many as cars, power lines, and high-rise buildings do. The wind is also changeable: If it"s not blowing, there"s no electricity generated.
Nevertheless, the wind energy industry is increasing sharply. Globally, generation more than quadrupled(四倍) between 2000 and 2006. At the end of last year, global capacity was more than 70,000 megawatts. In the energy-hungry United States, a single megawatt is enough electricity to power about 250 homes. Germany has the most installed wind energy capacity, followed by Spain, the United States, India, and Denmark. Development is also fast growing in France and China.
Industry experts predict that if this pace of growth continues, by 2050 the answer to one third of the world"s electricity needs will be found blowing in the wind
63. According to the passage, which of the following statements is true?
A. The rotating blades can kill as many birds as high-rise buildings do
B. Single families are not encouraged to build turbines.
C. The USA produces more wind power than any other country in the world.
D. The noise the turbines make may discourage people from building them.
64. The underlined word “generator” in the third paragraph probably means_______.
A. 电动机 B. 发电机 C. 机翼 D. 飞机引擎
65. If the USA wants to build wind turbines in an area with 30,000 homes, how many
should they build at least?
A. 50. B. 150. C. 250. D. 200.
66. All the following are the advantages of wind energy EXCEPT that_________.
A. it is environmentally friendly B. it is free to build and operate
C. the government supports it D. the energy is clean and renewable
第二节:完形填空(共20题:每题1.5分,满分30分)
阅读下面短文，掌握大意，然后从36～55各题所给的四个选项（A、B、C和D）中，选出最佳选项。
In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed 36 .
Today things are 37 . The world has become too 38 . We are using up our natural resources too quickly, and the same time we are 39 our environment with dangerous chemicals. If we 40 to do this, human life on the earth will not survive.
Everyone 41 today that if too many fish are taken from the sea, there will soon be no fish left. Yes, with modern fishing 42 , more and more fish are caught. We know that if too many trees are cut down, 43 will disappear and nothing will grow on the land. But we continue to use 44 and more powerful machines to 45 more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. 46 , in most countries waste products are 47 put into rivers or into the sea, and there are 48 laws to stop this.
We know, too, that if the 49 of the world continues to rise at the present rate, in a few years, there will not be enough 50 . What can we do to solve these problems?
If we eat more vegetables and less 51 , there will be more food available for everyone. Land where we grow crops 52 five times more people than land where animals are kept.
Our natural resources will 53 longer if we learn to recycle them.
The world population will not rise so quickly if people use modern methods of birth 54 .
Finally, if we educate people to think about the problems, we shall have a better and cleaner 55 in the future.
36. A. beautiful B. unlimited C. little D. valuable
37. A. common B. the same C. changeable D. different
38. A. crowded B. small C. dirty D. busy
39. A. protecting B. saving C. polluting D. fighting
40. A. try B. continue C. decide D. have
41. A. wonders B. realizes C. considers D. discovers
42. A. poles B. thoughts C. methods D. ideas
43. A. mountains B. the sea C. trees D. forests
44. A. bigger B. less C. smaller D. higher
45. A. grow up B. plant C. save D. cut down
46. A. Thus B. However C. Generally speaking D. Therefore
47. A. still B. even C. also D. certainly
48. A. many B. enough C. some D. few
49. A. production B. pollution C. population D. revolution
50. A. houses B. vegetables C. food D. lives
51. A. feeds B. meat C. fish D. grain
52. A. feeds B. increases C. supplies D. helps
53. A. use B. stay C. keep D. last
54. A. control B. born C. plan D. reward
55. A. nature B. sea C. planet D. Forest
第二部分：阅读理解（每小题2 分，满分30分）
第一节: 阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项
A
Books which give instructions on how to do things are very popular in the United States today. Thousands of these “How to” books are available; in fact, there are about four thousand books with titles that begin with the words “How to”. One book may tell you how to earn more money, another may tell you how to save or spend it, and another may explain how to give your money away. Many “How to” books give advice on careers (职业). They tell you how to choose a career and how to succeed at it. If you fail, however, you can buy a book called “How to Turn Failure into Success”. If you would like to become very rich, you can buy the book “How to Make a Million”. If you never make any money at all, you may need a book called “How to Live on Nothing?”. One of the most popular types of books is one that helps you with personal problems. If you want to have a better love of life, you can read “How to Succeed at Love Every Minute of Your Life.?”. If you are tired of books on happiness, you may prefer a book called “How to Make Yourself miserable?”.
Many of these books help people use their time better. Some people want books which will give them useful information about sports, hobbies, and travel. Other people use their free time to make repairs and improvements on their homes. They prefer books which give step by step instruction on how to repair things like plumbing (卫生管道工程) and electrical wiring, or on how to redecorate (重新装饰) or enlarge a house.
Why have “How to” books become so popular? Probably because life has become so complex. Today people have far more free time to use, more choices to make, and more problems to solve. “How to” books help people deal with modern life.
51. These “How to” books are written to______.
A. tell people on how to love their daily life
B. earn money for the companies to survive in the competition
C. give people some good advice on how to do something they want to do
D. give readers who want to know about America a deep impression
52. Before someone wants to find a good job, he had better______.
A. buy a book on “How to Make a Million?”
B. read a book on how to choose a career and how to succeed at it
C. make better use of his time in his daily life
D. use his free time to look for it
53. If people will not succeed in what he is doing, a book called________ can give help.
A. “How to Turn Failure into Success”
B. “How to Make a Million?”
C. “How to Succeed at Love Every Minute of Your Life?”
D. “How to Make Yourself Miserable?”
C
Depression （抑郁症）is a serious problem today. Depression causes workers to be unproductive, causing companies and countries to lose billion of dollars. One expert says that depression is like cancer because it is “widespread, costly and deadly”. Depression hits one person in five around the world.
Although people have believed depression to be a problem among the rich and educated, studies show that depression is a problem among everyone. Over any six-mouth period, between five to seven percent of the world’s population will be suffering from a serious depression.
Suicide （自杀）rates among people suffering from the disease in its extreme, or clinical form were 80 percent higher that in the population at large, and suffers were four times more likely to have heart attacks. People who suffer fr
om depression often have problems sleeping, getting up on time, and doing work productively.Depression, which researchers agree has its origin in the genes（基因）, brings loss of of confidence and ability to concentrate-making it possible for employees and managers to work efficiently.
Depression is made more serious in China by Chinese’s by Chinese inability to face it. Many people believe that depressed people are either weak or lazy. Besides, there is no good treatment, with few specialists available.
“Most patients in China just don’t get help,” a Chinese doctor says. “In my hospital, I have to see 30 or 40 patients in a morning, and just have time to say ‘Hello, how do you feel?’”
In Western countries, people are not afraid to admit that they have depression, but most do not tell it to their boss, because they fear that their boss would fire them.
“In my experience, aging bosses are the most tilling to admit they have it, because they feel the most secure about themselves,” an American doctor says.
Hopefully, in the near future, people around the world will be able to admit that they have depression so that they can get the right treatment.
49．Which of the following is TRUE according to the passage?
A．It is widely believed that everyone may suffer from depression.
B．Depression brings great problems to its suffers in their life and work.
C．Depression is a commonly-existing problem only in rich countries.
D．The poorer and the less educated a person is, the less he will suffer from depression.
50．Compared to normal people, depressed people are likely to be__________.
A．very unconfident and often absent-minded
B．easy to avoid being hit by heart attacks
C．working efficiently and productively
D．either weak or lazy
51．Depression becomes more serious in China because of _________.
A．the understanding of the problem B．the lack for treatment and doctors
C．their unwillingness to tell it to their boss D．the doctors’ careless work
52．What can we infer from the passage?
A．People are suffering from depression because of the shortage of specialists.
B．The aging bosses around the world dare to say they are depressed.
C．More and more patients will turn to specialists for help.
D．Western people are braver than Chinese people.
D
The Harvard Student-led Walking Tour
Let a student show you Harvard …on a free walking tour.
We welcome our neighbors to stop by the Harvard University Even & Information Centre, located in the Holyoke Centre Arcade at 1350 Massachusetts Avenue in the heart of Harvard Square in Cambridge.
Let a student take you and your family, school, or organization on an engaging, hour-long free historical tour of the Harvard Campus. The tours leaves form be Events & Information Centre. Not only will you discover the location of fascinating exhibition and programmers on campus, you will also see Harvard’s rich sampling of American history and architecture from the Colonial period to the present. Schedule of Tours.
Schedule of Tours
Tours leave the Events & Information Centre at 10 a. m. and 2 p. m. Monday through Friday, and at 2 p. m. on Saturday through the academic year(February 4 through May 2; September 23 through December 16). Summer tours (June 24 through August 15) are offered at 10 a.m. , 11:15 a.m., 2p.m., and 3:15 p.m. Monday through Saturday. Reser-vacations for special tours of 20 or more people may be made b calling the Events & Information Centre at (617) 495-1583 or emailing icenter@ camail. harvard, edu. Tours are suspended March 23 trough April 2 for Spring Break, May 3 through June 23 for Spring intercession（祷告）,and August 16 through September 22 for Summer intercession.
NOTE: Prospective（未来的）students may take tours originating at the Harvard Admission Office, located at Byerly Hall on 8 Garden Street in Cambridge. Form April through August, the Admissions staff conducts an information session at 10 a. m. , followed by an 11 a. m. tour. Monday through Friday. On Saturdays, there is no information session but the 11 a. m. tour is still scheduled. Another session is held year-round at 2p. m. with a 3 p.m. tour following. For more information on tours for prospective students, please call at (617)495-1551.
Harvard University Events & Information Centre.
Location: Holyoke Centre Arcade. 1350 Massachusetts Avenue, Cambridge MA 02138
Phone: (617) 495-1537
53．A person can join in a tour at________on Saturday through the academic year.
A．10 a. m. B．2 p. m. C．11:15 a. m. D．3:15 p. m.
54．If you want to go for an information session, you can go on__________.
A．May 2 B．June 23 C．August 20 D．September1
55．A student who wants an information session may___________for more information.
A．call (617) 495-1573 B．call(617) 495-1551
C．email iceter@ camail. Harvard, edu D．go to the Events & Information Centre
56．The above ad. is mainly intended for________ .
A．foreign visitors B．freshmen
C．high school students D．those living near Harvard University
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