单选题One can properly infer from this article that______.

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单选题{{B}}Text 2{{/B}} That experience led Rhett Butler to begin writing a book about rainforests and threats to their existence. But he did not publish the book. Instead, in 1999, he used his research for the book to create a web site. The site is Mongabay.com. The name is spelled m-o-n-g-a-b-a-y. Rhett Butler named the site for Nosy Mangabe, an island off Madagascar. His purpose was to inform the public about tropical rainforests. But the subject widened. A former businessman, he became a respected writer of science and environmental stories. The popularity of Mongabay.com attracted advertisers. Small ads on the site pay for its operations. Mongabay has grown and led to other sites. For example, there is a site for children, kids.mongabay.com. Another one, WildMadagascar.org, is all about the island nation that Rhett Butler calls his favorite place. He travels the world on several major trips each year. His working tools are a laptop computer, cameras and sometimes diving equipment. He often calls on experts for information for stories. For example, he interviewed Alison Jolly, a top expert on ring-tailed lemurs. And last week he wrote about another animal, the rare snow leopard. He interviewed Rodney Jackson, a biologist who established the Snow Leopard Conservancy. Stories like these have made Mongabay a favorite place on the Internet for researchers, students and teachers. In April, Time.com named it one of the fifteen top climate and environment web sites. Rhett Butler says he is concerned about how the current economic crisis in the world might affect environmental conservation efforts. For example, he says the falling price of oil could reduce interest in developing solar power. But he also points to a recent United Nations report on "green jobs". The report said efforts to fight climate change might lead to millions of jobs in biofuels by two thousand thirty.

单选题Developments in international cooperation are often, it is suggested, the result of ______.

单选题In the early nineteen fifties, researchers found that people 1 lower on intelligence tests 2 they spoke more than one language. Research in the sixties found 3 Bilingual people scored higher than monolinguals—people 4 speak only One language. So which is it? Researchers 5 their newest studies last month at a meeting of the American Association for the Advancement of Science. The latest 6 shows that being bilingual does not 7 make people smarter. But researcher Ellen Bialystock says it probably 8 make you better at certain skills. "Imagine 9 down the highway. There are many things that could capture your attention and you really need to be able to 10 all of them. Why would bilingualism make you any better at that?" said Ellen Bialystock. And the answer, she says, is that bilingual people are often better at controlling their attention—a function 11 the executive control system. Ms. Bialyst0ck is a psychology professor at York University in Toronto, Canada. She says the best method to 12 the executive control system is called the Stroop Test. A person is shown words in different colors. The person has to ignore the word 13 say the color. The problem is that the words are all names of colors. Her work shows that bilingual people continually practice this function. They have to, because both languages are 14 in their brain 15 . They 16 to suppress one to be able to speak in 17 . This mental exercise might help in other ways, too. Researchers say bilingual children are better able to separate a word from its meaning, and more 18 to have friends from different cultures. Bilingual adults are often four to five years 19 than others in 20 dementia or Alzheimer"s disease.

单选题Questions 14～16 are based on the following introduction of Deep Springs college. You now have 15 seconds to read Questions 14～16.

单选题 What do you do when you want to learn the meaning of a {{U}}(21) {{/U}} word? If you're {{U}}(22) {{/U}} most people, you do one of two things. You ask someone to tell you the word's meaning, or you look {{U}}(23) {{/U}} the word in a dictionary. The fact that you can look up words in a dictionary can be {{U}}(24) {{/U}} to a man named Noah Webster. He produced the first dictionary of American English. Noah Webster was a person who {{U}}(25) {{/U}} words. He was born in West Hartford, Connecticut in 1758. Webster studied at Yale and later became a teacher and a writer. In 1782 Webster was teaching at an elementary school in Goshen, New York. He saw that the schoolbooks he was using left {{U}}(26) {{/U}} something he felt was important. The books Webster {{U}}(27) {{/U}} to use in his teaching came from England. These books were just {{U}}(28) {{/U}} for teaching English children. But they paid no {{U}}(29) {{/U}} to American culture. Remember, the United States had only just {{U}}(30) {{/U}} its independence from England. Americans still educated their children the same way the British {{U}}(31) {{/U}} . Noah Webster wanted to give his students an education that was strongly {{U}}(32) {{/U}}. In writing his first dictionary, Webster was preparing for something grander. He had become familiar {{U}}(33) {{/U}}many different languages. He felt it was helpful and important to know where words came from their {{U}}(34) {{/U}} . He traveled in England and France {{U}}(35) {{/U}} research on the histories of English words. In 1807 he began to work on An American Dictionary of the English Language. Webster was seventy years old when he published the first {{U}}(36) {{/U}} of this important work in 1828. Webster wrote the dictionary completely {{U}}(37) {{/U}} hand. In those days people didn't have ballpoint pens, much {{U}}(38) {{/U}} typewriters. He had to use a quill pen, which was a feather with its thickest end {{U}}(39) {{/U}} into a point. This point was dipped in a bottle of ink in order to write. A writer using a quill pen had to dip the pen constantly to {{U}}(40) {{/U}} the ink.

单选题Whenisthemeetinghold?[A]3:15.[B]3:30.[C]3:45.

单选题 The automobile has many advantages. Above all, it offers people freedom to go wherever and whenever they want to go. The basic purpose of a motor vehicle is to get from point A to point B as cheaply, quickly, and safely as possible. However, to most people, cars are also personal fantasy machines that serve as symbols of power, success, speed, excitement, and adventure. In addition, much of the world's economy is built on producing motor vehicles and supplying roads, services, and repairs for those vehicles. Half of the world's paychecks are auto related. In the United States, one of every six dollars spent and one of every six non-farm jobs are connected to the automobile or related industries, such as oil, steel, rubber, plastics, automobile services, and highway construction. In spite of their advantages, motor vehicles have many harmful effects on human lives and on air, water, land, and wildlife resources. The automobile may be the most destructive machine ever invented. Though we tend to deny it, riding in cars is one of the most dangerous things we do in our daily lives. Since 1885, when Karl Benz built the first automobile, almost 18 million people have been killed by motor vehicles. Every year, cars and trucks worldwide kill an average of 250 000 people — as many as were killed in the atomic bomb attacks on Hiroshima and Nagasaki — and injure or permanently disable 10 million more. Half of the world's people will be involved in an auto accident at some time during their lives. Since the automobile was introduced, almost three million Americans have been killed on the highways — about twice the number of Americans killed on the battlefield in all US wars. In addition to the tragic loss of life, these accidents cost American society about $ 60 billion annually in lost income and in insurance, administrative, and legal expenses. Streets that used to be for people are now for cars. Pedestrians and people riding bicycles in the streets are subjected to noise, pollution, stress, and danger. Motor vehicles are the largest source of air pollution, producing a haze of smog over the world's cities. In the United States, they produce at least 500% of the country's air pollution.

单选题 UN Secretary-General Kofi Annan visited the troubled Darfur region of western Sudan Thursday to consider ways to end the humanitarian crisis. More than a million people have been displaced in Darfur because of violence that human rights groups blame on government-backed militias. Kofi Annan spoke with tribal and women leaders about the problems facing refugees in a camp called Zam-Zam, outside the city of E1-Feshir. The leaders said they were afraid to return home because of possible attacks by the Janjaweed militias. But overall, they said, aid groups were looking after them relatively well in the camp. From there, the secretary-general and his delegation went to a camp just 30 minutes away where aid workers said the security and living situation was more desperate. But' the refugees were nowhere to be found. U.N. officials said some 4, 000 refugees, called internally displaced persons, or IDPs, had been in the camp the night before but they had been moved by Sudanese authorities. Jan Egeland, the U. N. 's undersecretary-general of humanitarian affairs, said the U.N. did not appreciate the authorities' actions. "But it was in our program actually to show the secretary-general and the secretary-general wanted to see how IDPs live when there are no services" ,"And this was such a place." Mr. Egeland was then risked ff this was a deliberate ploy by Sudanese authorities. "I'm sure it has happened before and I'm sure it will happen again. "The refugees moved to another camp are among the one million people in Darfur driven from their homes by Janjaweed militias. Human rights groups charge that the ethnic-Arab militias have been used by the government to terrorize the Darfur's civilian population, which is ethnic-African, as part of efforts to put down an armed rebellion. Sudanese authorities deny supporting the Janjaweed and say they are working to disarm them. Until recently, they allowed little access to the region by aid workers. The conflict has given rise to what the U.N. calls the world's worst humanitarian crisis today. Refugees face hunger, epidemics (传染病)and continued attacks in camps in Darfur or over the border in Chad. From Darfur, Mr. Annan flew to Chad's capital, Ndjamena, for more discussions on the Darfur crisis. He is expected to return to Sudan's capital, Khartoum, Friday.

单选题{{B}}Passage 4{{/B}} In an interview last month, Frank Church, chairman of the Senate committee which is investigating the CIA, issued an oblique but impassioned warning, that the technology of eavesdropping had become so highly developed that Americans might soon be left with "no place to hide". That day may have arrived. Newsweek has learned that the country's most secret intelligence operation, the National Security Agency, already possesses the computerized equipment to monitor nearly all overseas telephone calls and most domestic and international printed messages. The agency's devices monitor a great deal of telephone circuits, cable lines and the microwave transmissions that carry an increasing share of both spoken and written communications. Computers are programed to watch for "trigger" words or phrases indicating that a message might interest intelligence analysis, when the trigger is pulled, entire messages are tape-recorded or printed out. That kind of eavesdropping is, however, relatively simple compared with the breakthroughs that lie ahead in the field of snoopery. Already it is technically feasible to "bug" an electric typewriter by picking up its feeble electronic emissions from a remote location and then change them into words. And some scientists believe that it may be possible in the future for remote electronic equipment to intercept and "read" human brain waves. Where such capabilities exist, so too does the potential for abuse. It is the old story of technology rushing forward with some new wonder, before the men who supposedly control the machines have found how to prevent the machines from controlling them.

单选题An elephant will only be trained successfully if______.

单选题______ take a rest in the hot afternoon sun.

单选题 {{I}}Questions 14 -16 are based on the following passage. You now have 15 seconds to read questions 14 -16.{{/I}}