第二部分 英语知识运用(3)

Currently, about one million personal computers in one hundred countries are involved in the World Community Grid. Mr Litow believes that another million computers will join the project. Then, he says, the World Community Grid will become the world’s largest super computer able to do many projects a year.

Any researcher can sign up to use its super computing power. However, all findings from the studies must be made public. Mr Litow says not only is the technology free, but it will also lead to more knowledge and valuable scientific discoveries.

69. What’s the best title for this passage?

A. Use personal computers to solve humanitarian problems.

B. The World Community Grid is doing humanitarian research.

C. Personal computers and research projects.

D. The World Community Grid and researchers.

70. The author wrote Paragraph 2 mainly to prove that _________.

A. some scientists are interested in improving the nutritional value of rice

B. the grid is supporting a research project to cure people of AIDS

C. the University of Washington is doing research on some diseases

D. some research teams are doing humanitarian research relying on the grid

71. The World Community Grid is successful mainly because _________.

A. many volunteers work for it

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B. many people have donated their extra computer power

C. most computers aren’t used when people are at home

D. IBM supplies it with advice and support

72. Which of the following statements is TRUE according to the passage?

A. There isn’t a regional limit for people to join the project.

B. Scientists at the University of Washington have benefited little from the project.

C. Many computers in the world aren’t active because people never use them.

D. Computers in most countries have participated in the project.

E难度：中

Rising temperatures could wipe out more than half of the earth’s species in the next few centuries, according to researchers who published a study on Wednesday linking climate change to past mass extinction (灭绝).

Researchers at the University of New York said their study was the first to examine the relationship between climate, extinction rates and biodiversity (生物多样性) over a long period. The findings suggest climate change was the cause of large-scale extinction, said Peter Mayhew, an ecologist who worked on the study.

The study analyzed fossil (化石) records and temperature changes over 500 million years, and found that three of the four biggest events of extinction — defined as when more than 50 percent of species disappeared — occurred during periods of high temperatures.

“The relationship is true for the whole period in general,” Mayhew said. “If temperatures went up, then the number of species in danger of extinction would go up and biodiversity would be lower.”

The research group of the United Nations predicts that average global temperatures are likely to rise by between 1.8 and 4 degrees Celsius (3.2 and 7.2 Fahrenheit) by the end of this century, partly as a result of greenhouse gas emissions.

The upper end of the forecast rise would heat the earth close to the temperatures of 250 million years ago, when 95 percent of all animal and plant species became extinct, Mayhew said.

Some of the past mass extinction happened over a brief few hundred years, providing evidence that present-day rapid temperature rises could have the same impact, Mayhew said. “It does give us an idea of what to expect in the near future,” he said. “There is nothing that says it couldn’t happen in a short timescale.”

73. What’s the passage mainly about?

A. The effects of global warming on the environment.

B. The connection between the climate and extinction of the earth’s species.

C. Fossil records and temperature changes over 500 million years.

D. The efforts of the world to rescue the earth’s species.

74. According to the study we learn that _________.

A. researchers could get information about extinction from fossil records

B. the four biggest events of extinction were all caused by high temperatures

C. researchers studied temperature changes of the past 500 years

D. global temperatures rise only due to greenhouse gas emissions

75. The underlined part “have the same impact” in Paragraph 8 means that _________.

A. temperatures on earth will go higher in the future

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B. biodiversity will become lower soon

C. people’s life will be influenced in a short timescale

D. mass extinction could happen in the future

第四部分 写作 (共两节，满分35分)

第一节 短文改错 (共10小题；每小题1分，满分10分)

The engineer was driving down a mountain road with a manager and 76. _________ a programmer. The brakes failed suddenly and the car out of control. 77. _________ Half way down the driver managed to stopping the car by running 78. _________ it against an embankment (路堤) and they narrow avoided falling off 79. _________ the cliff. They all got out, shaken by their narrow escape of death. The 80. _________ manager said, “To solve this problem, we need to organize a committee 81. _________ or develop a solution.” The engineer said, “No, that would take 82. _________ too long; besides, that method has never worked ago. I will take 83. _________ apart the brake system and correct them.” The programmer said, 84. _________ “You’re all wrong. We should push the car back up the hill and 85. _________

see if it happens again.”

第二节 书面表达 (满分25分)

随着素质教育的深化，双休日真正把时间还给了学生。假设你是李华，你对你校200名同学(男女各半) 双休日的科目学习情况作了调查。请你根据下表用 …… 此处隐藏：5279字，全部文档内容请下载后查看。喜欢就下载吧 ……