单选题The author uses "backward" here to indicate that ______.

单选题Human intelligence and the IQ scales used to measure it once again are becoming the focus of fiery debate. As argument rages over declining test scores in the nation"s schools, an old but explosive issue is reappearing; What is intelligence—and is it determined largely by genetics? The controversy erupted more than a decade ago when some U. S. scholars saw a racial pattern in the differing scores of students taking intelligence and college-entrance tests. Now, the racial issue is being joined by others. Teachers, psychologists, scientists and lawyers argue over the question of whether IQ—intelligence quotient—tests actually measure mental ability, or if findings are skewed by such factors as family background, poverty and emotional disorders. Moreover, some authorities assert that the rise in the number of college-educated Americans and their tendency to marry among themselves are creating a class of supersmart children of brainy parents—and, on the other side of the scale, a lumpenproletariat of children reflecting the supposedly inferior brainpower of their parents. Critics such as Harvard University biologist Richard C. Lewontin disagree. If mental ability were largely determined by inheritance, he says, efforts to enhance intelligence through the betterment of both home and child-rearing environments could only be marginally effective. He comments: "Genetic determinism could be used to justify existing social injustice as predetermined and inevitable and would render efforts made toward equalitarian goals as useless." Supporting Lewontin in this is J. McVicker Hunt, a professor at the University of Illinois, who maintains that IQ levels can be raised significantly by exposing children at an early age to stimulating environments. Hunt"s studies show that early help in such areas as education and nutrition can raise a child"s IQ by an average of 30 to 35 points. At stake in the uproar over IQ is the national commitment to improve the capabilities of the poor by investing billions of dollars annually in educational, medical and job programs.

单选题The thirty-day forecast is determined by examining ______.

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单选题According to the passage, the experience of helplessness causes rats to ________.

单选题Wherearetheytalking?[A]Atacinema.[B]Inapostoffice.[C]Atabank.

单选题Children who 1 unsupervised time in nature grow into more confident adults—adults who feel 2 in the world. As children play, they make no distinction between the natural world and themselves; they have an innate sense of themselves as belonging to and part of Nature. Children naturally connect and commune with animals as their "friends." This is why they are 3 to animal toys and cartoon figures. 4 there are frightening and dangerous animals in the world, this is knowledge that children acquire later—and is a 5 of the basic feeling of trust and safety they have with their animal companions. Too often in modern culture, "growing up" means becoming increasingly 6 from Nature and from our natural selves. A key part of saving our planet is changing our 7 with it, befriending it, feeling at home in the natural world. Since most of us live in cities these days, it is easy to 8 that a connection with nature is not possible, since nature is "out there" somewhere—in a national park or wilderness area. But nature is as 9 as our own animal bodies 10 breathe in rhythm with all of the living world. Even in the city we are surrounded with the wild nature of this planet. The Falconer of Central Park is a fascinating book that describes the myriad species of birds that touch down in Central Park in New York City as they annually 11 with the changing seasons. News articles 12 the excitement New Yorkers feel when a raptor builds a nest high on an office building on Wall Street. The activities of the parents, as they build the nest and sit on the eggs, are eagerly observed, and the 13 of the young raptors is celebrated. Cities have parks, rivers and gardens; 14 you are, the weather is a constant 15 that you are part of a globally interconnected natural system. The wind on your face as you walk from the parking lot to your office building is part of the Earth"s natural spirit that is touching you. 16 city lots are quickly colonized by weeds, trees and shrubs as well as birds and small animals. Cities and suburbs are home to an astonishing 17 of wildlife. Nature is always around us and within us. Many books on Nature Education 18 the importance of educating children (and adults) of their place in the natural world. This breeds self-confidence, wholeness, a sense of community. 19 that we belong to the natural world changes how we behave. Children who are " 20 literate" enjoy recycling and taking care of the environment.

单选题What happened in the year 1839 according to the passage?

单选题[此试题无题干]

单选题It is the author's opinion that ______ will improve the life of inner city people.

单选题 Many Americans find silence uncomfortable during a buffet or a formal dinner. {{U}} {{U}} 1 {{/U}} {{/U}}in the States there is the {{U}} {{U}} 2 {{/U}} {{/U}}practice of making "small talk" in certain social situation. Small talk deals {{U}} {{U}} 3 {{/U}} {{/U}}various topics, superficially, simply for the sake of keeping a conversation {{U}} {{U}} 4 {{/U}} {{/U}}. The topics {{U}} {{U}} 5 {{/U}} {{/U}}include the weather, sports, college courses, clothing, food, etc. Small talk is {{U}} {{U}} 6 {{/U}} {{/U}}useful at social gathering when you meet someone for the first time, or when polite conversation is expected but no serious discussion {{U}} {{U}} 7 {{/U}} {{/U}}. It is common but not necessarily expected that one should know {{U}} {{U}} 8 {{/U}} {{/U}}in a group before engaging him or her in conversation. {{U}} {{U}} 9 {{/U}} {{/U}}, at a party or {{U}} {{U}} 10 {{/U}} {{/U}}informal social gatherings, a simple " May I join you?" and a self-introduction is normally sufficient {{U}} {{U}} 11 {{/U}} {{/U}}acceptance into a group and to join in a conversation. In some {{U}} {{U}} 12 {{/U}} {{/U}}, such as the lobby of a concert hall or theater, a waiting room or a classroom, it is common for {{U}} {{U}} 13 {{/U}} {{/U}}to start a conversation even {{U}} {{U}} 14 {{/U}} {{/U}}an introduction. {{U}} {{U}} 15 {{/U}} {{/U}}the informality that pervades U. S. society, people in the States expect those whom they {{U}} {{U}} 16 {{/U}} {{/U}}to put aside {{U}} {{U}} 17 {{/U}} {{/U}}they are doing and listen. As a {{U}} {{U}} 18 {{/U}} {{/U}}, the conversation distance between two people is at least two or three {{U}} {{U}} 19 {{/U}} {{/U}}. Standing at a closer range will make many Americans feel {{U}} {{U}} 20 {{/U}} {{/U}}.

单选题What is important for human bodies to renew?

单选题Which can be inferred form the passage about Wikipedia?

单选题Except at night, they hardly ever have time together. He often sits alone in the house waiting for Julie-Julie to come home. It would be nice to have kids to play with when one comes home from work. But, Oh, the house is too small, Kappy-Pappy dear. We need to save and move to a bigger place before we can start a family. Kapsak never understands that. What does a big house have to do with having children? When he and Eka Udo had children, did they have a big house? But they died, didn't they? And the doctor later said something about cramped living conditions making it easy for malaria to virtually wipe out his family. So maybe Julie-Julie has a point. All his children had died because of being cooped up in one room. All except Udo. Udo Kapsak would not ordinarily admit it but the truth is he misses the boy so much. Udo's full-faced smile. His quirky-chirpy ways. His innocent probing manner. Oh Udo! He'll be approaching five now. Five! A big baby! Sighing noisily, Kapsak tries to put thoughts of his son out of his mind. He has not seen the boy in over three years. And maybe he has gone the way his brother and sisters went. No. Not likely. Awadamoto would have told him. Awadamoto. It's been a long time since Kapsak saw him. Throwing on a shirt, Kapsak hurries off to the taxi rank in the business district. "Kapsak, Kapsak!" Awadamoto cheers as his childhood friend approaches. "Awadamoto! You have abandoned me!" "Use that word lightly, Kapsak. You know who has done the most abandoning between me and you." "But Awad, we live here in town together." "Blame that wife of yours. I did not go to school and I don't like going near people who make me remember that all the time." Kapsak has it in mind to say something good about his wife, but something else jumps to his mouth. "Come Awad, what is Gestapo?" "Gestapo?" "No, Gestapo." "Man, I don't know. Where did you hear it?" "Eh, I heard it somewhere. How is the village?" "Exactly as you left it." "And... " "Eka Udo?" "Yes. How is she?" "How does it concern you? Anyway, I heard some big chief from her mother's village has taken her for his third wife." "What of my son? Is it well with him?" "You would have known if you had bothered to go and check on him. Look, it's my turn. "Bawling out to passengers to climb into his ramshackle taxi, Awadamoto ambles off. It is pouring heavily when Julie-Julie returns. Outside, it is rain. Inside, it is confusion. Kapsak is at first happy to see her back safely. Then his happiness turns to anger as she carries on about what an exciting time she had. Finally his anger succumbs to her gentle caresses and passion rules their world. Julie-Julie shoots out at first light. "I've got to see someone urgently, Kappy-Pappy. "Kappy-Pappy, that is my name now, Kapsak laughs to himself as he shuffles off to the construction site where he manages to earn a few bucks. On his way into the main yard, he ducks out of the way of a fast-moving four-wheel drive vehicle driven by an expatriate. Cursing lightly, he looks back to see the driver locked in a passionate kiss with a woman with luxuriant hair. "No wonder he nearly killed me!" Kapsak spits out. "Early morning and he's already..." His mouth remains open but the words dry up. like the water taps of the city. The woman with the expatriate turns momentarily, perhaps to pick up something from the backseat. In that instant, Kapsak sees clearly the woman for whom he had left his first wife and forsaken his family and people. But he does not see the earthmover in front of him. Neither does he hear its powerful horns. And the driver of the earthmover does not see Kapsak. By the time someone notices the crushed figure lying by the roadside, a blackening pool of blood has begun to seep into the earth.