单选题In preparing scientific reports of laboratory experiments,a student should {{U}}exhibit{{/U}} his findings in logical order and clear language.

单选题Protein, found in meat and cheese, is used for tissue building and in the developed countries most people eat about 110g daily, which is a good deal more than the recommended minimum of 70g a day. Animal fats, e. g. buyer are also good sources of energy, but are sometimes held to cause increased cholesterol levels in the blood (which may lead to fatty deposits in the arteries) and are therefore best avoided by people suffering from certain forms of heart disease, vegetable fats recommended as a substitute. Who should avoid taking in animal fat?A. People who are allergic to animal fat.B. People who have certain kinds of heart disease.C. People who are overweight.D. People who are too thin.

单选题 Valuing Childhood The value of childhood is easily blurred (变得模糊不清) in today's world. Consider some recent developments. The child, murderers in the Jonesboro schoolyard shooting case were convicted and sentenced. Two boys, 7 and 8, were charged in the murder of an 11-year-old girl in Chicago. Children who commit horrible crimes appear to act of their own will. Yet, as legal proceedings in Jonesboro showed, the one boy who was able to address the court couldn't begin to explain his acts, though he tried to apologize. There may have been a motive—youthful jealousy (嫉妒) and resentment. But a deeper question remains: Why did these boys and others in similar trouble apparently lack any inner, moral restraint? That question echoes for the accused in Chicago, young as they are. They wanted the girl's bicycle, a selfish impulse common enough among kids. Redemption (拯救) is a practical necessity. How can value be restored to young lives distorted by acts of violence? The boys in Jonesboro and in Chicago will be confined in institutions for a relatively short time. Despite horror at what was done, children are not—cannot be—dealt with as adults, not if a people wants to consider itself civilized. That's why politicians' cries for adult treatment of youthful criminals ultimately miss the point. But the moral void (真空) that invites violence has many sources. Family instability contributes, so does economic stress. That void, however, can be filled. The work starts with parents, who have to ask themselves whether they're doing enough to give their children a firm sense of fight and wrong. Are they really monitoring their activities and their developing processes of thought? Schools, too, have a role in building character. So do youth organizations. So do youth enforcement agencies, which can do more to inform the young about laws, their meaning, and their observance (遵守). The goal, ultimately, is to allow all children a normal passage from childhood to adulthood (成年), so that tragic gaps in moral judgement are less likely to occur. The relative few who fill such gaps with acts of violence hint at many others who don't go that far, but who lack the moral foundations childhood should provide—and which progressive human society relies on.

单选题The full economy round-trip is ＄ 273.A. ticketB. priceC. reservationD. return

单选题He does nothing that break the interests of the collective.A. runs forB. runs againstC. runs overD. runs into

单选题There is an abundant supply of cheap labor in this country.

单选题The history of cancer research has shown that

单选题The question is no mere academic one. The case, for example, with which people can change from working in the day to working at night is a question of growing importance in industry where automation calls insistently for round - the--neck working of machines. It normally takes from five days to one week for a person to adapt to a reversed routine of sleep and wakefulness, sleeping during the day and working at night, Unfortunately, it is often the case in industry that shifts are changed every week; a person may work from 12 midnight to 8a. m. one week,8a. m. to 4 p. m. the next, and 4 P. m. to 12 midnight the third and so on. This means that no sooner has he got used to one routine than he has to change to another so that much of his time is spent neither working nor sleeping very efficiently. How long does it normally take a person to adapt to a reversed routine of sleep and wakefulness?A. Seven to eight days.B. seven to twelve days.C. Five to seven days.D. Four to sevn days.

单选题Mr. Green has never been to Chin

单选题The poet William Carlos Williams was a New Jersey physician. A. doctor B. professor C. physicist D. resident

单选题She has been the subject of massive media coverage.______

单选题Is Your Child"s Stomach Pain All in His Head? We all know there are times that kids seem to complain 1 a stomach ache to get out of chores or going to school. Don"t be so sure that the pain they 2 is all in their minds. We"re learning more now about a condition 3 "functional abdominal pain" that is experienced by millions of kids every day. Like many teenagers, Kyle Brust makes it a point to do his homework: as 4 as he gets home. Unlike most, Kyle often did his with a terrible stomach ache. In fact, the 5 often started while he was at school, but getting help there was getting harder. "Some of my teachers wouldn"t let me go, because I"d asked so many times before and they thought I was trying to get out of 6 ," says Kyle. Kyle"s mom Marilyn says she couldn"t blame the 7 . After all, she"d taken him to the doctor several times herself, and even they couldn"t find anything 8 . "You know, you"re running the tests and nothing"s coming up. So, is it in his head, is he just an extremely stressful child? It"s just frustrating 9 we"re not finding any answers," says Marilyn. It turns out Kyle was suffering from a condition known 10 functional abdominal pain, that affects as many as one out of every ten kids in this country. Even 11 the cause of the pain may not be obvious, there are real consequences. "It really does hurt, and these kids really do suffer," says Dr. Campo, MD at Nationwide Children"s Hospital. To help 12 , Campo is looking into a new approach. He"s conducting clinical trials of an antidepressant that changes the way the body handles a chemical called serotonin. In a preliminary study, Dr. Campo found that in about eight out of ten 13 , the drug normally used to treat emotional pain worked to ease the pain in the 14 . "We think about it as being important in anxiety and depression and that"s all quite true, but what"s really interesting is that 95% of our body"s serotonin is in our gut," says Campo. Campo believes these kids have extremely sensitive intestines, and controlling the effects of serotonin may 15 ease the pain. It seemed to work for Kyle, who is now completely pain free for the first time in years.

单选题If you put too many potatoes in that paper-bag it will {{U}}burst{{/U}}.

单选题John talked over the new job offer with his wife.

单选题On Thanksgiving in the United States, families {{U}}gather{{/U}} and give thanks for the blessing(祝福) of the past year.

单选题They are endeavoring to change society as a whole.

单选题He is said to be suffering from {{U}}terminal{{/U}} cancer and has asked for euthanasia (安乐死). A. acute B. chronic C. final D. fatal

单选题Medicine Award Kicks off Nobel Prize Announcements Two scientists who have won praise for research into the growth of cancer cells could be candidates for the Nobel Prize in medicine when the 2008 winners are presented on Monday, kicking off six days of Nobel announcements. Australian-born U.S. citizen Elizabeth Blackburn and American Carol Greider have already won a series of medical honors for their enzyme research and experts say they could be among the front-runners for Nobel. Only seven women have won the medicine prize since the first Nobel Prizes were handed out in 1901. The last female winner was U.S. researcher Linda Buck in 2004, who shared the prize with Richard Axel. Among the pair"s possible rivals are Frenchman Pierre Chambon and Americans Ronald Evans and Elwood Jensen, who opened up the field of studying proteins called nuclear hormone receptors. As usual, the award committee is giving no hints about who is in the running before presenting its decision in a news conference at Stockholm"s Karolinska Institute. Alfred Nobel, the Swede who invented dynamite, established the prizes in his will in the categories of medicine, physics, chemistry, literature and peace. The economics prize is technically not a Nobel but a 1968 creation of Sweden"s central bank. Nobel left few instructions on how to select winners, but medicine winners are typically awarded for a specific breakthrough rather than a body of research. Hans Jornvall, secretary of the medicine prize committee, said the 10 million kronor (US $1.3 million) prize encourages groundbreaking research but he did not think winning it was the primary goal for scientists. "Individual researchers probably don"t look at themselves as potential Nobel Prize winners when they"re at work," Jornvall told The Associated Press. "They get their kicks from their research and their interest in how life functions." In 2006, Blackburn, of the University of California, San Francisco, and Greider, of Johns Hopkins University in Baltimore, shared the Lasker prize for basic medical research with Jack Szostak of Harvard Medical School. Their work set the stage for research suggesting that cancer cells use telomerase to sustain their uncontrolled growth.

单选题 阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 {{B}} Language and Communication{{/B}} A language is a signaling system which operates with symbolic vocal sounds (语声), and which is used by a group of people for the purpose of communication. Let's look at this {{U}}(51) {{/U}} in more detail because it is language, more than anything else, {{U}}(52) {{/U}} distinguishes man from the rest of the physical world. Other animals, it is true, communicate with one another by {{U}}(53) {{/U}} of cries: for example, many birds utter {{U}}(54) {{/U}} calls at the approach of danger; monkeys utter {{U}}(55) {{/U}} cries, such as expressions of anger, fear and pleasure. {{U}}(56) {{/U}} these various means of communication differ in important ways from human language. For instance, animals' cries do not {{U}}(57) {{/U}} thoughts and feelings clearly. This means, basically, that they lack structure. They lack the kind of structure that {{U}}(58) {{/U}} us to divide a human utterance into {{U}}(59) {{/U}}. We can change an utterance by replacing one word in it with {{U}}(60) {{/U}}: a good illustration of this is a soldier who can say, e.g., "tanks approaching from the north", {{U}}(61) {{/U}} who can change one word and say "aircraft approaching from the north" or "tanks approaching from the west"; but a bird has a single alarm cry, {{U}}(62) {{/U}} means "danger!" This is why the number of signals that an animal can make is very limited: the great tit (山雀) is a case {{U}}(63) {{/U}} point; it has about twenty different calls, {{U}}(64) {{/U}} in human language the number of possible utterances is limitless. It also explains why animal cries are very {{U}}(65) {{/U}} in meaning.

单选题Blend together the eggs, sugar and flour.