单选题How can you choose a password that is both secure and simple to remember?

单选题Speaker A. Can you come to my office early to help me with my paper?Speaker B: ______

单选题This ______ was conducted to find out how many people prefer TV series to films.

单选题Receiving watches in the wrong colors is a problem because ______.

单选题Turning cultivated land back into forests or pasture is a fundamental way to stem soil ______ and desertification in the long run. A. erosion B. depletion C. violation D. delusion

单选题In many parts of the world, man has not realized the importance of the role of trees. He has cut them down in large numbers ______ that without them he has lost the best friends he had. A. then found B. only to find C. but found D. therefore found

单选题Rita: Susan, you could become a model. Susan: Don't make me laugh! Question: What does Susan mean? A. She is amused by Rita. B. She is interested in Rita's suggestion. C. She is confused by Rita's words. D. She is unlikely to become a model.

单选题A: Where shall we meet?B: ______. A. Will you pick me up at my place? B. Just a moment, please. C. It doesn't matter. D. Well, you are here.

单选题According to the author biometric technology is____.

单选题The worst thing about television and radio is that they entertain us, saving us the trouble of entertaining ourselves. A hundred years ago, before all these devices were invented, if a person wanted to entertain himself with a song or a piece of music, he would have to do the singing himself or pick up a violin and play it. Now, all he has to do is turn on the radio or TV. As a result, singing and music have declined. Italians used to sing all the time. Now, they only do it in Hollywood movies. Indian movies are mostly a series of songs and dances trapped around silly stories. As a result, they don"t do much singing in Indian villages anymore. Indeed, ever since radio first came to life, there has been a terrible decline in amateur (业余的) singing throughout the world. There are two reasons for this sad decline. One, human beings are astonishingly lazy. Put a lift in a building, and people would rather take it than climb even two flights of steps. Similarly, invent a machine that sings, and people would rather let the machine sing than sing themselves. The other reason is that people are easily embarrassed. When there is a famous, talented musician readily available by pushing a button, which amateur violinist or pianist would want to try to entertain family or friends by himself? These earnest reflections came to me recently when two CDs arrived in the mail. They are historic recordings of famous writers reading their own works. It was thrilling to hear the voices from a long dead past in the late 19th century. But today, reading out loud anything is no longer common. Today, we sing songs to our children until they are about two, we read simple books to them till they are about five, and once they have learnt to read themselves, we become deaf. We"re alive only to the sound of the TV and the stereo (立体声音响). I count myself extremely lucky to have been born before TV became so common. I was about six before TV appeared. To keep us entertained my mother had to do a good deal of singing and tell us endless tales. It was the same in many other homes. People spoke a language; they sang it, they recited it; it was something they could feel. Professional actors" performance is extraordinarily revealing. But I still prefer my own reading, because it"s mine. For the same reason, people find karaoke (卡拉OK) liberating. It is almost the only electronic thing that gives them back their own voice. Even if their voices are hopelessly out of tune, at least it is meaningful self-entertainment.

单选题A: Well, Mrs. Anderson, I"ve completed my examination and I"m happy to say that there"s nothing serious. B: ______

单选题They are said ______ each other long time before they met in Harvard University where they worked together on a research project. A. to know B. to have known C. knowing D. having known

单选题A: Is anything wrong? You look pale. B: __________________ A. My daughter is in hospital. I must ask for leave to take care of her. B. Oh, I get up late this morning. C. Thank you. Nothing is wrong with me. D. Oh, I got a promotion finally.

单选题I was reading Shirley Hazzard's novel The Transit of Venus. Though I (51) her other books, I had always resisted this one. It (52) me as too pure somehow, too heroic, larger or finer than life and therefore unreal. But now I read it with an almost (53) pleasure. There were sentences that (54) of gratification to my eyes and (55) the hairs on the nape of my neck. I was in a Boston hospital, propped tip in bed with a feeding tube in my arm after (56) surgery for cancer. It was (57) double room and my roommate, who (58) when he spoke because he had both a broken chin and a drug habit was spraying the air for the fourth or fifth time that day with (59) had a television set and a radio going (60) . The diagnosis of my case was ambiguous. When I asked the doctor the usual question-How much time have I got?—he hesitated before answering. "I would say," he said, "that you have in the neighborhood of years./

单选题By the end of this week, he surely ______ collection of 2020 stamps. A. have had B. will be having C. will have had D. will have

单选题A: Don't you think the concert is terrific?B: ______.

单选题According to the latest report, consumer confidence ______ a breathtaking 15 points last month, to its lowest level in 9 years. A. soared B. mutated C. plummeted D. fluctuated

单选题Jan Hendrik Schon's success seemed too good to be true, and it was. In only four years as a physicist at Bell Laboratories, Schon, 32, had co-authored 90 scientific papers—one every 16 days—detailing new discoveries in superconductivity, lasers, nanotechnology and quantum physics. This output astonished his colleagues, and made them suspicious. When one co-worker noticed that the same table of data appeared in two separate papers—which also happened to appear in the two most prestigious scientific journals in the world, Science and Nature—the jig was up. In October 2002, a Bell Labs investigation found that Schon had falsified and fabricated data. His career as a scientist was finished. Scientific scandals, which are as old as science itself, tend to follow similar patterns of presumption and due reward. In recent years, of course, the pressure on scientists to publish in the top journals has increased, making the journals much more crucial to career success. The questions are whether Nature and Science have become too powerful as arbiters of what science reaches to the public, and whether the journals are up to their task as gatekeepers. Each scientific specialty has its own set of journals. Physicists have Physical Review Letters, neuroscientists have Neuron, and so forth. Science and Nature, though, are the only two major journals that cover the gamut of scientific disciplines, from meteorology and zoology to quantum physics and chemistry. As a result, journalists look to them each week for the cream of the crop of new science papers. And scientists look to the journals in part to reach journalists. Why do they care? Competition for grants has gotten so fierce that scientists have sought popular renown to gain an edge over their rivals. Publication in specialized journals will win the acclaims from academics and satisfy the publish-or-perish imperative, but Science and Nature come with the added bonus of potentially getting your paper written up in The New York Times and other publications. Scientists tend to pay more attention to the big two than to other journals. When more scientists know about a particular paper, they're more apt to cite it in their own papers. Being oft-cited will increase a scientist's "Impact Factor", a measure of how often papers are cited by peers. Funding agencies use the "Impact Factor" as a rough measure of the influence of scientists they're considering supporting.

单选题Speaker A: Excuse me, can you tell me where the Prince's Building is? Speaker B: ______ A. The Prince's Building? Why do you want to go there? B. Sure, if you like, I can show you how to get there. C. Well, turn to the left at the first corner after the crossroads. It's there near the corner. D. Strange! What's going on there? Three people have asked me how to get there.

单选题It was some time before he ______ after being knocked out.