单选题We can give（ ） depending on the model number

单选题Supplies were parachuted into the earthquake {{U}}zone{{/U}}. A. suburb B. valley C. district D. pine

单选题None of us expected the chairman to______ at the party. We thought he was still in hospital.

单选题The word "bandits" in paragraph 4 could be best replaced by ______.

单选题 Millions of people are using cell phones today. In many places it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication—having a mobile phone shows that they are cool and connected. The explosions around the world in mobile phone use make some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health. On the other hand, why do some medical studies show changes in the brain cells of some people who use mobile phones? Signs of change in the tissues of the brain and head can be detected with modern scanning (扫描) equipment. In one case, a traveling salesman had to retire at a young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree. What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about. As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

单选题Exercise is one of the few factors with a positive role in long-term maintenance of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to "light" beer and low-calorie bread than increase physical exertion. The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet. In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts: for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry(小甜饼). Even exercise professionals concede half a point here. "Exercise by itself is a very tough way to lose weight," says York Onnen, program director of the President's Council on Physical Fitness and Sports. Still, exercise's supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight. If you have been sedentary(极少活动的)and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year's time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight.

单选题She is absent from school today because she is suffering from a ________ toothache

单选题People unanimously agreed that John would have performed a great deal better under more ______ circumstances. A. favorable B. favorably C. favorite D. favor

单选题All of the machinery must be carefully inspected before production at the plant is allowed to__________.

单选题—How do you think of the job he did last week? —Well done. ______ .A. It couldn't he worseB. It should be betterC. It couldn't have been betterD. It was worse

单选题With proper measures, the economy in China is beginning to ______ again. A. rise up B. hold on C. pick up D. take on

单选题Similarly, he told couples to seek marital counseling （ ）if theyre having trouble communicating

单选题The government official can hardly find sufficient grounds _____his arguments in favor of the revision of the tax law.A. on which to base B. which to be based onC. to base on which D. on which to be based

单选题 We all have first impression of someone we just met. But why? Why do we form an opinion about someone without really knowing anything about him or her—aside perhaps from a few remarks or readily observable traits? The answer is related to how your brain allows you to he aware of the world. Your brain is so sensitive in picking up facial traits. Even very minor difference in how a person's eyes, ears, nose, or mouth are placed in relation to each other makes you see him or her as different. In fact, your brain continuously processes incoming sensory information—the sights and sounds of your world. These incoming signals are compared against a host of "memories" stored in the brain areas called the cortex (皮质) system to determine what these new signals "mean". If you see someone you know and like at school, your brain says "familiar and safe". If you see someone new, it says, "new and potentially threatening". Then your brain starts to match features of this stranger with other "known" memories. The more unfamiliar the characteristics, the more your brain may say, "This is new, I don't like this person." or else, "I'm intrigued (好奇的)". Or your brain may perceive a new face but familiar clothes, ethnicity, gestures—like your other friends; so your brain says. "I like this person". But these preliminary impressions can be dead wrong. When we stereotype people, we use a less mature form of thinking (not unlike the immature thinking of a very young child) that makes simplistic and categorical impressions of others. Rather than learn about the depth and breadth of people—their history, interest, values, strengths, and true character—we categorize them as jocks (骗子), peeks(反常的人), or freaks(怪人). However, if we resist initial stereotypical impressions, we have a chance to be aware of what a person is truly like. If we spend time with a person, hear about his or her life, hopes, dreams, and become aware of the person's character, we use a different, more mature style of thinking-and the most complex areas of our cortex, which allow us to be humane.

单选题Since the early 1930s, Swiss banks had prided themselves on their system of banking secrecy and numbered accounts. Over the years, they had successfully withstood every challenge to this system by their own government who, in turn, had been frequently urged by foreign governments to reveal in formation about the financial affairs of certain account holders. The result of this policy of secrecy was that a kind of mystique had grown up around Swiss banking. There was a widely held belief that Switzerland was irresistible to wealthy foreigners, mainly because of its numbered accounts and bankers" reluctance to ask awkward questions of depositors. Contributing to the mystique was the view, carefully propagated by the banks themselves, that if this secret was ever given up, foreigners would fall over themselves in the rush to withdraw money, and the Swiss banking system would virtually collapse overnight. To many, therefore, it came like a bolt out of the blue, when, in 1977, the Swiss banks announced they had signed a pact with the Swiss National Bank (the Central Bank). The aim of the agreement was to prevent the improper use of the country"s bank secrecy laws, and its effect to curb (遏制) severely the system of secrecy. The rules which the banks had agreed to observe made the opening of numbered accounts subject to much closer scrutiny than before. The banks would be required, if necessary, to identify the origin of foreign fund going into numbered and other accounts. The idea was to stop such accounts being used for dubious (可疑的) purposes. Also, they agreed not to accept funds resulting from tax evasion or from crime. The pact represented essentially a tightening up of banking rules. Although the banks agreed to end relations with clients whose identities were unclear or who were performing improper acts, they were still not obliged to inform on a client to anyone, including the Swiss government. To some extent, therefore, the principle of secrecy had been maintained.

单选题There is an {{U}}abundant{{/U}} supply of salt in the market. A. steady B. plentiful C. extra D. stable

单选题______ is stupid ______ you to say so.A. It; forB. It; ofC. That; forD. This; of

单选题Workers maintain that the company's__________to implement modern safety regulations puts everyone in the factory at risk of injury.

单选题It's {{U}}prudent{{/U}} to take a thick coat in cold weather when you go out. A. controversial B. reasonable C. sensible D. sensitive

单选题There are no ______ differences between the two products, despite the fact that each is made from different materials. A. observably B. observing C. observe D. observable