单选题Mary Mapes Dodge exercised {{U}}considerable{{/U}} influence on children's literature in late nineteenth century.

单选题Meanwhile, I always Ukept in touch with/U my former professor at college.

单选题The prehistoric art of inscribing figures and designs on rock surfaces seems to have slowly disappeared with the {{U}}advent{{/U}} of agriculture, which required a large amount of time and energy.

单选题His attempts to ______ the two friends failed bemuse they had complete faith in each other.

单选题Many of the ships (went down) with valuable treasure; but none of them (has made) great treasure tales. (As) a good wine, treasure is improved (by age).

单选题Did you suspect that the entire episode was an elaborate {{U}}deception?{{/U}}

单选题When the suspect appeared in court, the judge cast a ______ look at him.

单选题We had an unusually heavy rainfall due to the typhoon, and for a while, traffic became paralyzed.

单选题A: Hello, George. What a lovely home you have!B: ______

单选题A: Ray, aren't you going straight home after school today? B: ______.

单选题Growing economic problems were Uhighlighted/U by a slowdown in oil output.

单选题After the depression, there was a business boom .

单选题Human mind can respond quickly to what is before it, and Uby the same token/U can call up from within a host of appropriate ideas.

单选题{{B}}Passage Five{{/B}} The collapse of the Earth's magnetic field—which guards the planet and guides many of its creatures—appears to have started seriously about 150 years ago, the New York Times reported last week. The field's strength has decreased by 10 or 15 per cent so far and this has increased the debate over whether it signals a reversal of the planet's lines of magnetic force. During a reversal, the main field weakens, almost vanishes, and reappears with opposite polarity. The transition would take thousands of years. Once completed, compass needles that had pointed north would point south. A reversal could cause problems for both man and animals. Astronauts and satellites would have difficulties. Birds, fish and animals that rely on the magnetic field for navigation would find migration confusing. But experts said the effects would not be a big disaster, despite claims of doom and vague evidence of links between past field reversals and species extinctions. Although a total transition may be hundreds or thousands of years away, the rapid decline in magnetic strength is already affecting satellites. Last month, the European Space Agency approved the world's largest effort at tracking the field's shifts. A group of new satellites, called Swarm, is to monitor the collapsing field with far greater precision. "We want to get some idea of how this would evolve in the near future, just like people trying to predict the weather," said Gauthier Hulot, a French geophysicist working on the satellite plan. "I'm personally quite convinced we should be able to work out the first predictions by the end of the mission." No matter what the new findings, the public has no reason to panic. Even if a transition is coming on its way, it might take 2 000 years to mature. The last one took place 780 000 years ago, when early humans were learning how to make stone tools. Deep inside the Earth flow hot currents of melted iron. This mechanical energy creates electromagnetism. This process is known as the geophysical generator. In a car's generator, the same principle turns mechanical energy into electricity. No one knows precisely why the field periodically reverses. But scientists say the responsibility probably lies with changes in the disorderly flows of melted iron, which they see as similar to the gases that make up the clouds of Jupiter.

单选题Woman: We are going to go away on vacation... Can you hear me?Man: I'm all ears.Question: What does the man mean?

单选题Her style of dress accentuated her extreme slenderness.

单选题They are known as singles, singletons, the never-married, the divorced, and the widowed. What they share is that they are part of the country"s fastest-growing living unit—more than 31 million one-person households in 2010, according to the U. S. Census. Traditionally, relationship researchers have found that people living alone are on the bottom rung of the wellness ladder. They lack the emotional, financial, and daily help of a committed partner, which are major reasons why people in successful marriages and other strong two-person relationships live better in measures of health, happiness, and longevity. "When people succeed in having a good intimate relationship, it has so many benefits," says UCLA psychology professor Ben Karney. "Your body works better, your immune system functions better, your body produces more antibodies. Study after study shows that people in good relationships live longer." Even severely ill people who were in good relationships recovered faster and lived longer than comparably ill people who were not in good relationships. Single men, in particular, take especially poor care of themselves. "Unmarried men are more likely to have bad health habits than married men," says Linda Waite, a sociologist at the University of Chicago. "They drink too much, don"t eat well, don"t wear seat belts" and don"t enjoy the kind of social supports they would in a committed relationship. Single women, by comparison, live better, precisely because they have better social connections and are used to taking care of themselves. However, many experts say the health and happiness disadvantages of living alone are disappearing. Social science research tends to look at a long-distance rearview mirror, analyzing large groups of people over many, many years. Current trends are easily documented. "Over the past 30 years, the health gap between the married and never-married has narrowed to almost nothing," says Debra Umberson, a sociologist at the University of Texas. "Being not married has increasingly become an accepted option." "Once they accept [being unmarried] and make their peace with it, they live just as well as anyone else," says Deb Carr, a Rutgers University sociologist. "We see them expanding their definitions of what is a family. Not only do they have larger numbers of friends [than married people], but they have more frequent contact with them and closer relationships with them." Carr says society has become friendlier to "never marrieds" as well, and that people are more tolerant and supportive of a broad range of different ways people choose to live. Eric Klinenberg is a sociologist at NYU and author of a recent book about living alone called Going Solo . It supports, if not celebrates, the emergence of the one-person house-hold as an increasingly preferred living choice, not only in the United States but even more so in many Western European nations. Klinenberg is careful to distinguish among different types of one-person households when assessing their occupants" health and well-being. He also thinks that much of the pro-marriage research is based on either misleading or flawed assumptions. "Many, if not most, studies of the health consequence of marriage compared currently married people versus never married people," he says. The adverse health consequences of divorce and widowhood are well-documented but are usually viewed separately from the positive health effects of people who remain married. No one gets married thinking the marriage will fail or their spouse will die, Klinenberg notes. And while staying married produces benefits, he says it"s impossible to conclude that simply getting married improves a person"s well-being and longevity compared with staying single. In looking at the effects of living alone, Klinenberg says, "I make a very careful distinction between living alone, being alone, being isolated, and feeling lonely. These are four different things. And most researchers, even the best of them, mix them together." In the end, human relationships are the best antidote to the downside effects of living alone. Toni Antonucci, a University of Michigan psychologist and relationship expert, creates an image of people having a social convoy (护卫队) that helps them navigate their life. Keeping that convoy intact is essential for our happiness. People need to realize this and take ownership of their relationships. "We just sort of think happiness comes to us," she says. "We need to rethink that. You can do things to make yourself happier. People should take some responsibility for being happy instead of it being a passive thing."

单选题The weakened governor could not withstand another {{U}}catastrophe{{/U}}.