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抛物线y2=6x及直线x=2围成图形绕x轴旋转一周形成立体的体积为()。
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SECTION C NEWS BROADCAST
Directions: In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. At the end of each news item, you will be given 10 seconds to answer the questions.
听力原文： Voice One: This is what scientists say the sun sounds like—the equivalent of a solar heartbeat. Solar scientists used listening devices to unravel some of the mysteries of Earth's nearest star. It's not the actual sound. Sound can't travel through the vacuum of space. But [this is] a recreation based on the waves recorded by the devices.
Each pitch corresponds with the movement and vibrations of various hot gasses as they flow like rivers beneath the sun's surface—similar to how trade winds blow on Earth.
Scientists translate the sounds they make into images. This allows a unique glimpse inside the gun's complex architecture, to answer questions about its temperature, chemical makeup, and how gasses inside ebb and flow.
Voice Two: What we're finding is that there are very interesting structures inside. There's an equatorial belt of faster moving material. And then, farther up near the poles, we believe that there's a jet stream of material moving about 60 miles an hour up at a very north latitude.
How do the scientists measure the pitch？
It used to be said that English people take their pleasure sadly. No doubt this would still be true if they had any pleasure to take, but the price of alcohol and tobacco in my country has provided sufficient external causes for melancholy. I have sometimes thought that the habit of taking pleasure sadly has crossed the Atlantic, and I have wondered what it is that makes so many English-speaking people somber in their outlook in spite of good health and a good income.
In the course of my travels in the American I have been impressed by a kind of fundamental malaise which seems to me extremely common and which poses difficult problems for the social reformer. Most social reformers have held the opinion that, if poverty were abolished and there were no more economic insecurity, the millennium would have arrived. But when I look at the face of people in opulent cars, whether in your country or in mine, I do not see that look of radiant happiness which the aforesaid social reformers had led me to expect. In nine cases out of ten, I see instead a look of boredom and discontent and an almost frantic longing for something that might tickle the jaded palate.
But it is not only the very rich who suffer in this way Professional men very frequently feel hopeless thwarted. There is something that they long to do or some public object that they long to work for. But if they were to indulge their wishes in these respects, they fear that they would lose their livelihood. Their wives are equally unsatisfied, for their neighbor, Mrs. So-and-So, has gone ahead more quickly, has a better car, a larger apartment and grander friends.
Life for almost everybody is a long competitive snuggle where very few can win the race, and those who do not win are unhappy. On social occasions when it is de rigueur to seem cheerful, the necessary demeanor is stimulated by alcohol. But file gaiety does not ring true and anybody who has just one drink too many is apt to lapse into lachrymose melancholy.
One finds this sort of thing only among English-speaking people. A Frenchman while he is abusing the Government is as gay as a lark. So is an Italian while he is telling you how his neighbor has swindled him. Mexicans, when they are not actually starving or actually being murdered, sing ad dance and enjoy sunshine and food and drink with a gusto which is very rare north of the Mexican frontier. When Andrew Jackson conquered Pensacola from the Spaniards, it was Sunday. She pointed out the scandal to her husband, who decreed that cheerfulness must cease forthwith. And it did.
When I try to understand what it is that prevents so many American from being as happy as one might expect, it seems to me that there are two muses, of which one goes much deeper than the other. The one that goes least deep is the necessity for subservience in some large organization, If you are an energetic man with strong views as to the fight way of doing the job with which you are concerned, you find yourself invariable under the orders of some big man at the top who is elderly, weary and cynical. Whenever you have a bright idea, the boss puts a stopper on it. The more energetic you are and the more vision you have, the more you will suffer from the impossibility of doing any of the things that you feel ought to be done; When you go home and moan to your wife, she tells you that you are a silly fellow and that if you became the proper sort of yes--- man your income would soon be doubled, ff you try divorce and remarriage it is very unlikely that there will be any change in this respect. And so you are condemned to gastric ulcers and premature old age.
It was not always so. When Dr. Johnson complied his dictionary, he compiled it as he thought fit. When he felt like saying oats is food for men in Scotland and horses in England, he said so. When he defined a fishing-rod as a stick with a fish at one end and a fool at the other, there w
SECTION B INTERVIEW
Directions: In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Questions 1 to 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the following five questions.
Now listen to the interview.
听力原文：Jackie: Andrew, How's your toothache？
Andrew: It's gone, thanks, Jackie. I went to the dentist last night and he took care of it.
Jackie: Which tooth was it？
Andrew: The last one on the upper right-hand side. It has a huge filling in it now.
Jackie: I hate having my teeth filled. It's not just the pain I hate. I hate the sound of drilling.
Andrew: So do I. I'd rather have a tooth pulled than filled.
Jackie: Have you ever had one of your teeth pulled？
Andrew: No, but the one the dentist just filled will have to come out someday. He says it can't be frilled again.
Jackie: Teeth keep causing trouble, and nobody really does anything about it. I can't understand why.
Andrew: They can put men on the moon, but they can't keep people from having trouble with teeth.
Jackie: Why can't they transplant teeth the way they transplant hearts？ They can give somebody a different heart. Why can't they give him different teeth？
Andrew: I've heard they're working on that. My dentist says they're working on tooth transplants right now.
Jackie: On second thought, I'm not sure I'd want to eat with some other person's teeth.
Andrew: Well. That's not how it works. The idea is to develop a plastic tooth that can be put into the hole where your own tooth came out.
Jackie: Really？ What makes it stay there？
Andrew: So far they haven't tried it with people, but they've made it work with baboons.
Jackie: Do they hook the plastic tooth to the teeth beside it？
Andrew: No, The plastic tooth is made with plastic roots, and after a while the gums grow around the roots, so the tooth can't fall out.
Jackie: Are you making this up？
Andrew: No! Seriously, somebody at the Georgetown University Hospital in Washington has been working on it. Jackie: Well, it sounds like a good idea.
Which of the following is true？
Western tattooists work with a special electrical instrument, something like a dentist's drill. It holds a number of very fine needles, which, for the purpose of reproducing the approved drawing, ac dipped, in black ink. When the current is switched on, and the instrument passed rapidly over the outline, the action of the needles drives the ink into the skin. The tattooist is constantly wiping away excess ink as he works. This is where skill is so important, for the speed of the instrument means that he must work rapidly over lines which ac almost permanently covered over.
The basic drawing then has to be colored in, using the same method but with non-poisonous paint now replacing the ink. The average tattoo contains four or five colors, each injected with a separate instrument. How many needles ac used each time will depend on the area m be covered, but it is possible to use as many as ten or twelve, giving up to 3,000 injections a minute. Filling in is a lengthier process than outlining, and, since most people find half an hour under the needles quite enough, a major tattoo can take a number of visits to complete. Every visit will leave the skin sore and stinging, and to prevent infection the area is finally treated with an antiseptic cream and covered with a dressing. After a few days it finally heals over, leaving the new tattoo clearly visible under the skin.
And there it stays, for, as those who get tattooed and then thind better of it soon discover, getting rid of the tattoo is a far more difficult business than getting it. The tattooist is powerless to undo what he has done and can only refer unhappy customers to their doctors who, no matter how sympathetic; are able to offer little encouragement. Removing a tattoo, if it can be done at all, has to be by one of two methods, neither of them pleasant or even completely satisfactory, The first is by surgery and skin replacment, an operation which leaves permanent marks. The other possibility is to re-tat-too over the offending design with a special acidbased substance which absorbs the colors as it goes. This is a painful and lengthy process which, though less expensive than private surgery, is still quite costly. "Tattooing is a thorn in the side of the medical profession", is the view of one Harley Street skin specialist. He receives a constant stream of enquiries about removal, but in most cases the expense and discomfort of having it done make people decide to go on living with their unwanted designs. "Patients have to want it very much go to through with it," he says. "Those who do are usually the ones who find that they are refused jobs, or cannot get advancement because their hands are decorated."
This is such a common event that responsible tattooists refuse to work on areas which cannot normally be covered up." The trouble is that most people don' t think about it until it' s too late." says one tattooist who had his own hands tattooed some years ago, and freely admits to regretting it" I realize now that it looks in bad taste."
The fine needles are used______.
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