Research workers have classified chip formation into tear and shear.

A . BSS B . ESS C . IBSS D . SSID

A . It hasn‘t helped improve balance sheets. B . It is an age-old practice for most Americans. C . It has been on the rise since the recent recession began. D . It has reflected the American tradition of self-abnegation.

此题为判断题(对，错)。

A．to B．on C．for D．from

Professor Taiju Matsuzawa wanted to find out why otherwise healthy farmers in northern Japan appeared to be losing their ability to think and reason at a relatively early age, and how the process of ageing could be slowed down. With a team a colleague (同事) at Tokyo National University, he set about measuring brain volumes of a thousand people of different ages and varying occupations. " Computer technology enabled the researchers to obtain precise (精确的) measurements of the volume of the front and side sections of the brain, which relate to intellect (智能) and emotion, and determine the human character. " The rear section of the brain, which controls functions like eating and breathing, does not contract with age, and one can continue living without intellectual or emotional facilities. Contraction of front and side parts—as cells die off—was observed in some subjects in their thirties, but it was still not evident in some sixty- and seventy-year-olds. Matsuzawa concluded from his tests that there is a simple remedy to the contraction normally associated with age—using the head. The findings show in general terms that contraction of the brain begins sooner in people in the country than in the towns. Those least at risk, says Matsuzawa, are lawyers, followed by university professors and doctors. White collar workers doing routine work in government offices are, however, as likely to have shrinking brains as the farm workers, bus drivers and shop assistants. Matsuzawa's findings show that thinking can prevent the brain from shrinking. Blood must circulate properly in the head to supply the fresh oxygen the brain cells need. "The best way to maintain good blood circulation is through using the brain, " he says, "Think hard and engage in conversation. Don't rely on pocket calculators. The team of doctors wanted to find out______. A．how to make people live longer B．the size of certain people's brains C．which people are most intelligent D．why certain people age sooner than others

(Though) he is (hard-working), he still feels inferior (than) (others) in the special class. A．Though B．hard-working C．than D．others

A．Right B．Wrong C．Not mentioned

[A]jobs and businesses [B] living expenses [C] change of life-styles [D] separation from adult children

A.syndrome B.synthesis C.hierarchy D.hypothesis

Social workers help these people in different ways.One way is to find resources for people.They find out what kinds of help people need.Then, they set up programs to meet the needs of the individual12.They may focus on child abuse, poverty, violence, and other problems.For someone with family difficulties, social workers may find a parenting class or a support group.For a homeless person, they may find a place for them to live and a career training program.For a student, they may find a mentor or a learning disability expert. Many social workers give counseling.They talk to people about their lives and help them understand and solve their problems and to make plans. Most social workers spend the day in an office.Some travel to the people they help.Sometimes, they meet with people in the evening or on weekends.Social workers can be very busy when they are helping many people at once. 1.According to the text, what is not social workers'job？ A.to help people with family problems B.to make people's lives better C.to do the housework for people 2.For someone with family problems, social workers will() A.find them a place to live B.find them a career training program C.find them a parenting class 3.Social workers build()to provide the help for people in need. A.problems B.days C.resources 4.Which of the following sentence is not true？ A.Social workers give some advice to people. B.Most social workers think of their job as boring. C.Social workers may help many people at a time. 5.The main point of this passage is about. A.How busy social workers are B.How social workers do their job C.How tired social workers are"

The decline in degree production in what are called the STEM disciplines (science, technology, engineering, and math) seems to be 40 related to the comparatively weak performance by U.S. schoolchildren on international assessments of math and science. Many students entering college have weak skills in mathematics. According to the 2005 report of the Business-Higher Education Forum, 22 percent of college freshmen must take remedial (补习的) math 41 , and less than half of the students who plan to major in science or engineering 42 complete a major in those fields. The result has been a decrease in the number of American college graduates who have the skills, 43 in mathematics, to power a workforce that can keep the country at the forefront (前沿) of innovation and maintain its standard of living. With the 44 performance of American students in math and science has come increased competition from students from other countries that have strongly supported education in these areas. Many more students earn 45 in the STEM disciplines in developing countries than in the United States. A) accelerating B) actually C) closely D) contemporary E) courses F) critical G) declining H) degrees I) especially J) future K) led L) met M) procedures N) proportions O) spheres

We don't know what the effects would be on healthy human cells, Marinelli told New Scientist magazine. In the Italian study, after 24 hours 20 percent more leukemia cells died than healthy cells but longer exposure to the radio waves triggered genes in the surviving cancer cells to divide aggressively. The results of the study do not show any direct threat to human health but they support the belief of some scientists who say radiation can damage DNA and destroy the cell repair system, thus making tumors more deadly. But animal studies, including recent research by Australian scientists at the Institute of Medical and Veterinary Science in Adelaide, have shown that radiation from mobile phones does not trigger the growth of tumors. The WHO (i.e., The World Health Organization) has called for more research into the potential health hazards of mobile phones and has urged people to limit their use of them. A British government inquiry, which concluded that there was no evidence that mobile phones are a danger to health, has advised parents to discourage their children, whose brains are still developing, from using them excessively. What is the speaker's main topic？ A．Effects of using mobile phones on healthy human cells. B．Risks of developing cancer involved in the use of mobile phones. C．Damage to healthy cells caused by the use of mobile phones. D．The potential health hazards of mobile phones on humans.

The differences in relative growth of various areas of scientific research have several causes. (1)Some of these causes are completely reasonable results of social needs.Others are reasonable consequences of particular advances in science being to som

A．supporting B．supported C．to be supporte D．having supported

是 否

A．She has completed most of the research that was required for her project． B．She has not done much research yet and so does not mind changing the focus of her project． C．She is disappointed that the professor is unfamiliar with her research topiC D．She believes public schools in the northeastern states were only slightly changed due to immigration．

A．rope off B．rip off C．ward off D．turn off E．put off

B．很幸运，我们及时地找到了从事研究所需要的最完整的设备。