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1、汇编选集北语19秋阅读（IV）作业2【答案】2813(单选题)1: The story was said to have been based on the information from a reliable _.A: sourceB: foundationC: originD: basis正确答案:(单选题)2: To create a supercell, take a storm where wind speed increases with height, while wind direction veers; a situation in which updraughts and
2、 downdraughts within the thunderstorm can support each others existence rather than cancel each other out. It is as winds blow into this turbulent region from three to five kilometers up that a low-pressure section of the storm may begin to rotate.The rotation of this part of the storm (known as a m
3、esocyclone) causes the air pressure to fall some more, prompting wind lower down to flow into the storm and speed up upwards. This creates a spinning updraught which high-level winds in the storm can boost in the same way that wind blowing across the top of a chimney does wonders for drawing up an o
4、pen fire.Youre not yet looking at a tornado, though if youre watching this particular storm develop you might start looking for a getaway car especially if the storm begins to change shape. When mid-to upper-level winds upwind of the storm encounter the supercell, some are forced to detour round it.
5、 They converge again downwind, moulding the storm clouds into an ominous anvil-shape in the process. But while some wind goes round the mesocyclone, some runs full square into this meteorological brick wall and is forced downward, creating a "rear flank downdraught" (RFD) which many expert
6、s believe is what makes or breaks a tornadic storm.Its when an RFD tries to swing around the base of the storm, narrowing the area of wind flowing into the updraught and increasing its spin (in the same way figure skaters when their arms are pulled in) that you might want to get into your getaway ca
7、r. If youre anywhere beneath whirling piece of meteorological give and takea funnel cloudyou are in a bad, dangerous place known to stormchasers as "the bear cage". Its where, if the funnel cloud sticks around long enough for the updraught to touchdown on terra firma, you will find yoursel
8、f on the inside of a tornado.Question:One of the factors that create a supercell is that _.A: updraughts and downdraughts are supportive to each otherB: updraughts undermine downdraughtsC: the storm should be in low-pressure section three kilometers highD: wind blows faster while rising higher but t
9、he direction unchanged正确答案:(单选题)3: I _ get this done immediately or it will be too late.A: mustB: canC: mayD: might正确答案:(单选题)4: There are no seats _ for those who are late for the show.A: availableB: enoughC: suppliedD: make正确答案:(单选题)5: Young people should have the right to control and direct their
10、own learning, that is, to decide what they want to learn, and when, where, how, how much, how fast, and with what help they want to learn it. To be still more specific, I want them to have the right to decide if, when, how much, and by whom they want to be taught and the right to decide whether they
11、 want to learn in a school and if so which one and for how much of the time.No human right, except the right to life itself, is more fundamental than this. A persons freedom of learning is part of his freedom of thought, even more basic than his freedom of speech. If we take from someone his right t
12、o decide what he will be curious about, we destroy his freedom of thought. We say, in effect, you must think not about what interests and concerns you, but about what interests and concerns us.This right of each of us to control our own learning is now in danger. When we put into our laws the highly
13、 authoritarian notion that someone should and could decide what all young people were to learn and beyond that, could do whatever might seem necessary (which now includes dosing them with drugs) to compel them to learn it, we took a long step down a very steep and dangerous path. The requirement tha
14、t a child go to school, for about six hours a day, 180 days a year, for about ten years, whether or not he learns anything there, whether or not he already knows it or could learn it faster or better somewhere else, is such a gross violation of civil liberties that few adults would stand for it. But
15、 the child who resists is treated as a criminal. With this requirement we created an industry, an army of people whose whole work was to tell young people what they had to learn and to try to make them learn it. Some of these people, wanting to exercise even more power over others, or to be even mor
16、e "helpful," are now beginning to say, "If compulsory education is good for children, why wouldnt it be good for everyone? If it is a good thing, how can there be too much of it?"They are beginning to talk, as one man did on a nationwide TV show, about "womb-to-tomb" schooling. If hours of homework every night are good for the young, why wouldnt they be good for us allth
