单选题Nowhere in nature is aluminum found free, ______ its always being combined with elements, most commonly with oxygen. A. referring to B. except for C. regardless of D. owing to

单选题It was as a biologist that he represented himself, and______he was warmly received.

单选题A good teacher is able to ______ a complicated idea in very simple terms.

单选题In 1816, an apparently insignificant event in a remote part of Northern Europe ______ Europe into a bloody War.

单选题This novel is ______ a good book, but there are many that ______ better.A. very, areB. rather, isC. quite, isD. quite, are

单选题There is one thing that everyone wants more than anything else. Some people try to get it by making money. They think that when they have enough money to buy such things as houses, farms, and cars, they will have the one thing that everyone wants. Other people believe that if they know enough they will find this thing. They study all their lives in search of it. Still others think that if they have power, they will find this thing. They keep telling themselves: when I am a boss, I will no longer have to search for this thing. What is it that everyone wants more than anything else? What is it that all of us keep working and striving for each day? It is happiness. Happiness is a strange thing. It does not mean the same to all men. What will make one man happy may not make another man happy. Some men say that happiness comes from helping others; other men say that happiness comes from making life more pleasant for everyone. What do you mean when you say "That makes me happy"? Read what different people have said about happiness. Perhaps you will learn something that will bring you peace of mind, comfort, money or it may bring you what you search for — happiness.

单选题The first line reads; "She sits on the bed with a helpless expression. What is your name? Au-guste. Last name? Auguste. What is your husband" s name? Auguste, I think. " The 32 pages of medical records that follow are the oldest medical description of Alzheimer" s disease. Psychiatrist Konrad Maurer and his colleagues at Johann Wolfgan Goethe University in Frankfurt found the file in their hospital" s archive, where it had been missing for nearly 90 years, and published exerpts from it last May in The Lancet. The notes, in a cramped, archaic German script, were written by Alois Alzheimer—the physician who first described the disease. His patient, Auguste D. , was a 51-year-old woman who had suffered fits of paranoid jealousy and memory lapses so disturbing that her family finally brought her to a local hospital known as the Castle of the Insane. Over the next four years Aizheimer tracked her condition. Upon her death he examined her brain tissue and found the distinctive lesion that are now hallmark of the disease. Today Alzheimer" s afflicts some 4 million Americans. Although it still cannot be cured, or e-ven treated very well, several recent studies hint that some treatments—from estrogen to vitamin E to anti-inflammatory drugs—can reduce either the risk of developing the disorder or its symptoms. And more is being learned about its distinctive pathology. This past year, for instance, researchers discovered a new kind of lesion in Alzheimer" s patients. A genetic study also pinpointed a mutation that is present in some 60 percent of them—a mutation in the DNA of mitochondria, the energy— producing organelles of the cells. But nearly a century ago, it was Alois Alzheimer who first described the disease an in so doing became one of the first physicians to offer a biological basis fro a psychiatric condition. Finding the file, Maurer says, "is like holding history in your hands. "

单选题A．assign B．Atlantic C．condemn D．antique

单选题Everybody should try to do ______ best on the exam. A. his B. our C. its D. their

单选题--Are you satisfied with her work, sir? --Not at all. It couldn't be any ______.

单选题Too many vulnerable child-free adults are being ruthlessly (无情的) manipulated into parenthood by their parents, who think that happiness among older people depends on having a grand-child to spoil. We need an organization to help beat down the persistent campaigns of grandchildless parents. It"s time to establish Planned Grandparenthood, which would have many global and local benefits. Part of its mission would be to promote the risks and realities associated with being a grandparent. The staff would include depressed grandparents who would explain how grandkids break lamps, bite, scream and kick. Others would detail how an hour of babysitting often turns into a crying marathon. More grandparents would testify that they had to pay for their grandchild"s expensive college education. Planned grandparenthood"s carefully written literature would detail all the joys of grand-child-free life: a calm living room, extra money for luxuries during the golden years, etc. Potential grandparents would be reminded that, without grandchildren around, it"s possible to have a conversation with your kids, who incidentally would have more time for their own parents. Meanwhile, most children are vulnerable to the enormous influence exerted by grand-childless parents aiming to persuade their kids to produce children. They will take a call from a persistent parent, even if they"re loaded with works. In addition, some parents make handsome money offers payable upon the grandchild"s birth. Sometimes these gifts not only cover expenses associated with the infant"s birth, but extras, too, like a vacation. In any case, cash gifts can weaken the resolve of even the noblest person. At Planned Grandparenthood, children targeted by their parents to reproduce could obtain non-biased information about the insanity of having their own kids. The catastrophic psychological and economic costs of childbearing would be emphasized. The symptoms of morning sickness would be listed and horrors of childbirth pictured. A monthly newsletter would contain stories about overwhelmed parents and offer guidance on how childless adults can respond to the different lobbying tactics that would-be grandparents employ. When I think about all the problems of our overpopulated world and look at our boy grabbing at the lamp by the sofa, I wish I could have turned to Planned Grandparenthood when my parents were putting the grandchild squeeze on me. If I could have, I might not be in this parenthood predicament (窘境). But here"s the crazy irony, I don"t want my child-free life back. Dylan"s too much fun. (406 words)

单选题Shelley's famous poem “To a Skylark” praises the birds for its {{U}}carefree{{/U}} spirit.

单选题Digital photography is still new enough that mast of us have yet to form an opinion about it, much less (1) a point of view. But this hasn't stopped many film and computer fans from agreeing (2) the early (3) wisdom about digital cameras -- they're neat (4) for your PC, but they're not suitable for everyday picture-taking. The fans are wrong: more than anything else, digital cameras are radically (5) what photography means and what it can be. The venerable medium of photography as we know (6) is beginning to seem out of (7) with the way we live. In our computer and camcorder culture, saving pictures (8) digital files and watching them on TV is no less (9) -- and in many ways more (10) -- than fumbling with rolls of film that must be sent off to be (11) . Paper is also terribly (12) . Pictures that are incorrectly framed, focused, or lighted are nonetheless (13) to film and ultimately processed into prints. The digital medium changes the (14) . Still images that are (15) digitally can immediately be shown on a computer monitor, TV screen, or a small liquid-crystal display (LCD) built right into the camera. And since the points of light that (16) an image are saved as a series of digital bits in (17) memory, (18) being permanently etched onto film, they can be erased, retouched, and transmitted on-line. What's it like to (19) with one of these digital cameras? It's a little like a first date -- exciting, confusing and fraught with (20) .

单选题{{B}}Part A{{/B}}Directions : Read the following four passages. Answer the questions blow each passage by choosing A, B, C and D． {{B}}Text 1{{/B}} Working at nonstandard times--evenings, nights, or weekends—is taking its toll on American families. One-fifth of all employed Americans work variable or rotating shifts, and one- third work weekends, according to Harriet B．Presser, sociology professor at the University of Maryland. The result is stress on familial relationships, which is likely to continue in coming decades. The consequences of working irregular hours vary according to gender, economic level, and whether or not children are involved. Single mothers are more likely to work nights and weekends than married mothers. Women in clerical, sales, or other low-paying jobs participate disproportionately in working late and graveyard shifts. Married-couple households with children are increasingly becoming dual-earner households, generating more split-shift couples. School-aged children, however, may benefit from parents' nonstandard work schedules because of the greater likelihood that a parent will be home before or after school. On the other hand, a correlation exists between nonstandard work schedules and both marital instability and a decline in the quality of marriages. Nonstandard working hours mean families spend less time together for dinner but more time together for breakfast. One-on-one interaction between parents and children varies, however, based on parent, shift, and age of children. There is also a greater reliance on child care by relatives and by professional providers. Working nonstandard hours is less a choice of employees and more a mandate of employers. Presser believes that the need for swing shifts and weekend work will continue to rise in the coming decades. She reports that in some European countries there are substantial salary premiums for employees working irregular hours—sometimes as much as 50% higher. The convenience of having services available 24 hours a day continues to drive this trend. Unfortunately, says Presser, the issue is virtually absent from public discourse. She emphasizes the need for focused studies on costs and benefits of working odd hours, the physical and emotional health of people working nights and weekends, and the reasons behind the necessity for working these hours. "Nonstandard work schedules not only are highly prevalent among American families but also generate a level of complexity in family functioning that needs greater attention," she says.

单选题Journal of Biomaterials Research will publish ______.

单选题Wholly aside from aesthetic and moral considerations, fashion is an economic absurdity, and there is little to be said in its favor. Nevertheless, we Carl appreciate the wisdom in Gina Sombrero’s belief that the enormous stress which women lay on everything pertaining to clothes and the art of personal adornment is connected with the tendency to crystallize sentiment into an object. Woman symbolizes every important event in her life by a special dress; and a jewel or a beautiful gown means to a woman what an official decoration means to a man. "If a woman's clothes cost the funnily and society a little time, money, and activity, they allow woman, independent of lies and calumnies, to triumph and come to the fore outside of man's world and competition. They allow woman to satisfy her desire to be the first in the most varied fields by giving her the illusion that she is first, and at the same time enabling her rival to have the same illusion. Clothes absorb some of woman's activity which might otherwise be diverted to more or less worth-while ends; they give woman real satisfaction, a satisfaction complete in itself, and independent of others, and they constitute safety valve which saves society from much greater and more dangerous evils than those which they cause." The aptness of these observations lies in the emphasis on clothes which are really beautiful and distinctive. But fashion is not primarily concerned with beauty; and fashion connotes conformity, not the individuality so cherished by our society and so artfully suggested by the copywriters. Many people who rigorously follow fashions believe they are following their own inclinations; they are unaware of the primitive, tribal compulsion; and this is true of fashions in manners, morals and literature, as well as in clothes.

单选题Efforts to educate people about the risks of substance abuse seem to deter some people from using dangerous substances, if such efforts are realistic about what is genuinely dangerous and what is not. Observed declines in the use of such drugs as LSD, PCP, and Quaaludes since the early 1970s are probably related to increased awareness of the risks of their use, and some of this awareness was the result of warnings about these drugs in "underground" papers read by drug users. Such sources are influential, because they do not give a simple "all drugs are terrible for you" message. Drug users know there are big variations in danger among drugs and antidrug education that ignores or denies this is likely to be ridiculed. This is illustrated by the popularity among young marijuana users of Reefer Madness, a widely unrealistic propaganda, film against marijuana made in the 1930s. This film made the rounds of college campuses in the 1970s and joined rock-music videos on cable television's MTV in the 1980s. Instead of deterring marijuana use, it became a cult film among users, many of where got high to watch it. Although persuasion can work fir some people if it is balanced and reasonable, other people seem immune to the most reasoned educational efforts. Millions have started smoking even through the considerable health risks of smoking have been well known and publicized for years. Moreover, the usefulness of education lies in primary prevention: prevention of abuse among those who presently have no problem. Hence, Bomier's contention that "if the Pepsi generations can be persuaded to drink pop wine, they can be persuaded not to drink it while driving" is probably not correct, since most drunken driving is done by people who already have significant drinking problems, and hence seem not to be dissuaded even by much stronger measures such as loss of a driver's license.

单选题I don't suppose you are serious,_____?