单选题Mrs. Brown is supposed ______ for Italy last week. A. to have left B. to be leaving C. to leave D. to have been left

单选题A:______Madam? B: I'd like to see some )ed linen, please.

单选题Sometimes the student may be asked to write about his ______ to a certain book or article that has some bearing on the subject being studied. A. impression B. reaction C. comprehension D. sentiment

单选题What the leader does and says ______ of great importance.

单选题At first ______ , the famous painting doesn't impress the audience at all. A. glance B. gaze C. stare D. view

单选题Very few people could understand his lecture because the subject was very ______.

单选题Customer: This shirt seems a size too small for me. It's an L. Saleswoman: I'm really sorry.______. A. I think it's just the right size. B. The color doesn't suit you. C. It looks nice on you. D. It doesn't come in XL.

单选题Imagine waking up and finding the value of your assets has been halved. No, you're not an investor in one of those hedge funds(对冲基金) that failed completely. With the dollar slumping to a 26-year low against the pound, already-expensive London has become quite unaffordable. A coffee at Starbucks, just as unavoidable in England as it is in the United States, runs about $8. The once all-powerful dollar isn't doing a Titanic against just the pound. It is sitting at a record low against the euro and at a 30,year low against the Canadian dollar. Even the Argentine peso and Brazilian real are thriving against the dollar. The weak dollar is a source of humiliation (屈辱), for a nation's self-esteem rests in part on the strength of its currency. It's also a potential economic problem, since a declining dollar makes imported food more expensive and exerts upward pressure on interest rates. And yet there are substantial sectors of the vast U.S. economy — from giant companies like Coca-Cola to mom-and-pop restaurant operators in Miami — for which the weak dollar is most excellent news. Many Europeans may view the U.S, as an arrogant superpower that has become hostile to foreigners. But nothing makes people think more warmly of the U.S. than a weak dollar. Through April, the total number of visitors from abroad was up 6.8 percent from last year. Should the trend continue, the number of tourists this year will finally top the 2000 peak. Many Europeans now apparently view the U.S. the way many Americans view Mexico — as a cheap place to vacation, shop and party, all while ignoring the fact that the poorer locals can't afford to join the merrymaking. The money tourists spend helps decrease our chronic trade deficit. So do exports, which, thanks in part to the weak dollar, soared 11 percent between May 2006 and May 2007. For first five months of 2007, the trade deficit actually fell 7 percent from 2006. If you own shares in large American corporations, you're a winner in the weak-dollar gamble. Last week Coca-Cola's stock bubbled to a five-year high after it reported a fantastic quarter. Foreign sales accounted for 65 percent of Coke's beverage (饮料) business. Other American companies profiting from this trend include McDonald's and IBM. American tourists, however, shouldn't expect any relief soon. The dollar lost strength the way many marriages break up — slowly, and then all at once. And currencies don't turn on a dime. So if you want to avoid the pain inflicted by the increasingly pathetic dollar, cancel that summer vacation to England and look to New England. There, the dollar is still treated with a little respect.

单选题Beauty has always been regarded as something praiseworthy. Almost everyone thinks attractive people are happier and healthier, have better marriages and respectable occupations. Personal consultants give better advice for finding jobs. Even judges are softer on attractive defendants (被告). But in the executive circle, beauty can become a liability. While attractiveness is a positive factor for a man on his way up the executive ladder, it is harmful to a woman. Handsome male executives were perceived as having more integrity than plainer men; effort and ability were thought to account for their success. Attractive female executives were considered to have less integrity than unattractive ones; their success was attributed not to ability but to factors such as luck. All unattractive women executives were thought to have more integrity and to be more capable than the attractive female executives. Increasingly, though, the rise of the unattractive overnight successes was attributed more to personal relationships and less to ability than was that of attractive overnight successes. Why are attractive women not thought to be able? An attractive woman is perceived to be more feminine (女性的) and an attractive man more masculine (男性的) than the less attractive ones. Thus an attractive woman has an advantage in traditionally female jobs, but an attractive woman in a traditionally masculine position appears to lack the "masculine" qualities required. This is true even in politics. "When the one clue is how he or she looks, people treat men and women differently," says Anne Bowman, who recently published a study on the effects of attractiveness on political candidates. She asked 125 undergraduates to rank two groups of photographs, one of men and one of women, in order of attractiveness. The students were told the photographs were of candidates for political offices. They were asked to rank them again, in the order they would vote for them. The results showed that attractive males utterly defeated unattractive men, but the women who had been ranked most attractive invariably received the fewest votes.

单选题Among the following cities, the wind direction will not change in______.

单选题James: Hello. Could I speak to Jone, please? Jone: ______.

单选题He was proud of being chosen to participate in the game and he ______ us that he would try as hard as possible. A. insured B. guaranteed C. assumed D. assured

单选题This question is too hard, and it is ______ my understanding and comprehension.

单选题 Why are mobiles so popular? Because people love to talk to each other. And it is easier with a mobile phone. In countries like Russia and China, people use the mobile phone in places where there is no ordinary telephone. Business people, use mobiles when they're traveling. In some countries, like Japan, many people use their mobile phones to send e-mail message and access the Internet. They use a new kind of mobile phone called "i-mode". You can even use a mobile phone to listen to music. Mobile phones are very fashionable with teenagers. Parents buy mobile phones for their children. They can call home if they are in trouble and need help. So they feel safer. But teenagers mostly use them to keep in touch with their friends or play simple computer games. It's cool to be the owner of a small expensive mobile. Research shows that teenage owners of mobile phones smoke less. Parents and schools are happy that teenagers are safer and smoke less. But many people dislike them. They hate it when the businessman opposite them on the train has a loud conversation on his phone. Or when the mobile phone rings in a care or restaurant. But there is a much more serious problem. It's possible that the mobile phone can heat up the brain because we hold the phone so close to our head. Scientists fear that mobiles can perhaps be bad for your memory and even give you cancer.

单选题Cindy: John, where are the cookies? Don't tell me you ate them all! John: Yes, I did.______.

单选题 Community cancer clusters are viewed quite differently by citizen activists than by epidemiologists. Environmentalists and concerned local residents, for instance, might immediately suspect environmental radiation as the culprit when a high incidence of cancer cases occurs near a nuclear facility. Epidemiologists, in contrast, would be more likely to say that the incidences were "inconclusive" or the result of pure chance. And when a breast cancer survivor, Lorraine Pace, mapped 20 breast cancer cases occurring in her West Islip, Long Island, community, her rudimentary research efforts were guided more by hope that a specific environmental agent could be correlated with the cancers than by scientific method. When epidemiologists study clusters of cancer cases and other noncontagious conditions such as birth defects or miscarriage, they take several variables into account, such as background rate (the number of people affected in the general population), cluster size, and specificity (any notable characteristics of the individual affected in each case). If a cluster is both large and specific, it is easier for epidemiologists to assign blame. Not only must each variable be considered on its own, but it must also be combined with others. Lung cancer is very common in the general population. Yet when a huge number of cases turned up among World War II shipbuilders who had all worked with asbestos, the size of the cluster and the fact that the men had had similar occupational asbestos exposures enabled epidemiologists to assign blame to the fibrous mineral. Although several known carcinogens have been discovered through these kinds of occupational or medical clusters, only one community cancer cluster has ever been traced to an environmental cause. Health officials often discount a community's suspicion of a common environmental cause because citizens tend to include cases that were diagnosed before the afflicted individuals moved into the neighborhood. Add to this the problem of cancer's latency. Unlike an infectious disease such as cholera, which is caused by a recent exposure to food or water contaminated with the cholera bacterium, cancer may have its roots in an exposure that occurred 10 to 20 years earlier. Do all these caveats mean that the hard work of Lorraine Pace and other community activists is for nothing? Not necessarily. Together with many other reports of breast cancer clusters on Long Island, the West Islip situation highlighted by Pace has helped epidemiologists lay the groundwork for a well designed scientific study.

单选题John Philip Sousa, (who) (many) people consider the (greatest) composer of marches, wrote his music during the era (known) as the Gay 90s.A. whoB. manyC. greatestD. known