题目内容
（请给出正确答案）
Some scientists set up domes in the Polar Regions.
A．Y
B．N
C．NG
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更多“Some scientists set up domes in the Polar Regions.A．YB．NC．NG”相关的问题
A．conservation
B．maintenance
C．storage
D．reserve
Which of the following is NOT true according to the passage？
A.A worldwide earthquake warning network has been set up to avoid major earthquakes.
B.Unusual behavior. of animals may be an indication of possible earthquakes．
C.It seeins possible now for scientists to predict when and where earthquakes will occur．
D.Most earthquakes take place on some specific areas of the earth．
To determine the 【40】______ of the lack of sleep, scientists have put 【41】______ through a set of psychological and performance tests 【42】______ them, for instance, to add columns of numbers or recite a passage read to them only minutes earlier, "We've found that if you're in sleep 【43】______ , performance suffers," says Dr. David. "Short-term memory is 【44】______ , 【45】______ are abilities to make decisions and to concentrate."
【26】
A．for
B．at
C．in
D．since
To determine the【C15】______ of the lack of sleep, scientists have put subjects【C16】______ a set of psychological and performance tests【C17】______ them, for instance,【C18】______ columns of numbers or recall a passage read to them only minutes earlier, "We've found that if you're in sleep deficit (缺乏), performance suffers," says Dr. David. "Short-term memory is【C19】______ , as are abilities to【C20】______ decisions and to concentrate."
【C1】
A．request
B．need
C．want
D．fancy
After years of study, scientists figured out that living things, including human bodies, are basically made of amino acids, nucleotide bases, lipids and water. How could such complicated molecules have been formed and have started to interact in the primitive soup？ Scientists were stumped.
Then, in 1953, two scientists named Harold Urey and Stanley L. Miller did a very simple experiment to find out what had happened on the primitive Earth. They set up some tubes and bottles in a closed loop, and put in some of the same gases that were present in the atmosphere 4 billion years ago—water vapour, ammonia, carbon dioxide, methane, and hydrogen.
Then they shot an electric spark through the gases to simulate bolts of lightning on the ancient Earth, circulated the gases through some water, sent them back for more sparks, and so on. After several days, the water that the gases had been bubbling through turned brown. Some new chemicals were dissolved in it. When Miller and Urey analyzed the liquid, they found that it contained amino acids—the very kind of molecules found in all living things.
When did scientists come to realize how the atoms and molecules on the Earth mostlikely combined to make living things？
A．4 billion years ago.
B．After seven days.
C．Many years ago.
D．In 1953.
Task 2
Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45.
For many years, scientists couldn't figure out how atoms and molecules combined to make living things. Plants, fish, dinosaurs, and people are made of atoms and molecules, but they are put together in a more complicated way than the molecules in the primitive ocean. What's more, living things have energy and can reproduce, while the chemicals on the Earth 4 billion years ago were lifeless.
After years of study, scientists figured out that living things, including human bodies, are basically made of amino acids, nucleotide bases, lipids and water. How could such complicated molecules have been formed and have started to interact in the primitive soup？ Scientists were stumped.
Then, in 1953, two scientists named Harold Urey and Stanley L. Miller did a very simple experiment to find out what had happened on the primitive Earth. They set up some tubes and bottles in a closed loop, and put in some of the same gases that were present in the atmosphere 4 billion years ago — water vapour, ammonia, carbon dioxide, methane, and hydrogen.
Then they shot an electric spark through the gases to simulate bolts of lightning on the ancient Earth, circulated the gases through some water, sent them back for more sparks, and so on. After several days, the water that the gases had been bubbling through turned brown. Some new chemicals were dissolved in it. When Miller and Urey analyzed the liquid, they found that it contained amino acids — the very kind of molecules found in all living things.
When did scientists come to realize how the atoms and molecules on the Earth mostlikely combined to make living things？
A．4 billion years ago.
B．After seven days.
C．Many years ago.
D．In 1953.
Dr. Jorge Yunis of the University of Minnesota Medical School in Minneapolis has found that 70 percent of oncogenes, or cancer-causing genes, are located near inherited weak points on chromosomes(染色体). Varying from individual to individual, vulnerable to chemical carcinogens(致癌剂), X rays and other cancer-inducing agents.
"If a chromosome snaps apart in the immediate vicinity of an oncogene," says Yunis, "normal genetic control mechanisms could break down and the stage would be set for the formation of cancer." Younis has shown that such a sequence occurs at the beginning of numerous leukemias (白血病), lymphomas(淋巴瘤) and some tumors of the lung, colon(结肠) and breast.
Yunis and other investigators have found that petroleum-based products--notably pesticides and insecticides-damage specific sites on at least two of the 23 pairs of human chromosomes that carry genetic information. Similarly, tobacco smoke tends to attack a part of another chromosome.
From paragraph 1, we know that some 40 genes involving in cancer are ______. ()
A．harmful to the human body
B．necessary to the human body
C．the elements that form. cancer
D．useless to the human body
The company’s main contract was with Dank plc a large industrial conglomerate.
In the course of its research activity, Clean Ltd’s scientists developed a new super glue. Des was very keen to pursue the manufacture of the glue but the board of directors overruled him and decided that the company should stick to its core business.
The managing director of Dank plc is a friend of Des’s and has told him that Dank plc will not be renewing its contract with Clean Ltd as he is not happy with its performance. He also told Des that he would be happy to continue to deal with him, if only he was not linked to Clean Ltd.
Following that discussion Des resigned from his position as managing director of Clean Ltd and set up his own company, Flush Ltd which later entered into a contract with Dank plc to replace Clean Ltd. Flush Ltd also manufactures the new glue discovered by Clean Ltd’s scientists, which has proved to be very profitable.
Required:
In the context of company law, advise the board of Clean Ltd as to whether they can take any action against Des or Flush Ltd.(10 marks)
The Intergovernmental Panel on Climate Change (IPCC) was set up in 1988 to assess information on climate change and its impact. Its Third Assessment Report predicts global temperature rises by 2100 of between 1.4~C and 5.8~C. Although the issue of the. changing climate is very complex and some changes are uncertain, temperature rises are expected to affect countries throughout the world and have a knock-on effect with sea-level rises.
Scientists have argued about whether temperature rises are due to human activities or due to natural changes in our environment. The IPCC announced in 2001 that "most of the warming observed over the last 50 years is likely to be attributable to human activities". This was a more forceful statement than in 1996 when the Second Assessment Report stated that there was a "discernible human influence on the climate" which was the first time they had concluded such a link. Many experts believe the faster the climate changes, the greater the risk will be.
Key points of the projections for climate change globally include that by the second half of the 21st century, wintertime rainfall in the northern mid to high latitudes and Antarctica will rise, that meanwhile Australia, Central America and southern Africa are likely to see decreases in autumn precipitation, that some land areas in the tropics will see more rainfall, and that there will generally be more hot days over land areas.
IPCC probably does not______.
A．analyse climate change information
B．record weather changes on its premises
C．predict what is to happen to the earth
D．collect weather date from many countries
Kempner and coauthors from Brown University and the University of Pennsylvania conducted in-depth interviews with 41 scientists engaged in a variety of studies. They found that half felt con-strained by formal limits, but even more said they were affected by informal or unspoken rules on what and how studies can be done. Their findings are reported in Thursday's issue of the journal Science, in a paper entitled "Forbidden Knowledge." Formal limits include such things as the ban on federal funding for most research on embryonic stem cells and restrictions on research involving humans. In many cases, too, scientific journals have their own rules, such as refusing to publish material they think might be detrimental to national security.
But there also are fears about the ire of interest groups, such as opponents of animal testing, or about how a project would be perceived by the public. While formal and informal restrictions on re-search are not unusual, Deborah G. Johnson of the University of Virginia said they are not necessarily all bad. "On the one hand, you want a profession to have norms and to have some standards and some self-regulation. On the other hand, you don't want there to be an environment of fear of repercussions if they do something which they think is legitimate," said Johnson, who has studied similar issues but was not part of Kempner's group.
One researcher, commenting on avoiding controversial work, told Kempner's team: "I would like to lunatic-proof my life as much as possible." Militant animal rights groups were a concern for many, who worded about organizations that have invaded laboratories to set animals loose and destroy research. Kempner recalled one of her interviews. "All of a sudden he said, 'How do I know you're not from an animal rights organization collecting information to storm the place？'"
Sometimes commercial interests can get in the way of research, Kempner added, saying there are cases when the pharmaceutical industry will ask a researcher not to publish a particular finding.
According to the passage, why some scientists are thinking twice about doing or reporting their research？
A．Because they are lack of fund.
B．Because they have to share the honor with others.
C．Because their research may arouse Controversy.
D．Because the government bans them from publishing the results of their research.
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