填空题The u______ meaning of the sentence varies with the context in which it is uttered.

填空题If the experiment succeeds or fails, it will provide us with valuable experience , which is essential to improving our future work. A. If B. provide us with C. experience D. improving

填空题This is {{U}}为什么他不想上学的原因{{/U}}。

填空题{{U}}He made it clear{{/U}} that he did not agree with all we came up with at the meeting.

填空题毕竟 there are over twenty different meanings for "fast" in the dictionary.

填空题{{B}}Directions:{{/B}} In the following text, some sentences have been removed. For Questions 41-45, choose the most suitable one from the list A-G to fit into each of the numbered blanks. There are two extra choices, which do not fit in any of the blanks. Mark your answers on ANSWER SHEET 1.{{/B}} Most people would not object to living a few years longer than normal, as long as it meant they could live those years in good health. Sadly, the only proven way to extend the lifespan of an animal in this way is to reduce its calorie intake. Studies going back to the 1930s have shown that a considerable reduction in consumption (about 50%) can extend the lifespan of everything from dogs to nematode worms by between 30% and 70%. Although humans are neither dogs nor worms, a few people are willing to give the calorie-restricted diet a try in the hope that it might work for them, too. But not many—as the old joke has it, give up the things you enjoy and you may not live longer, but it will sure seem as if you did. Now, though, work done by Marc Hellerstein and his colleagues at the University of California, Berkeley, suggests that it may be possible to have, as it were, your cake and eat it too. Or, at least, to eat 95% of it. Their study, to be published in the American Journal of Physiology—Endocrinology and Metabolism, suggests that significant gains in longevity might be made by a mere 5% reduction in calorie intake. The study was done on mice rather than people. But the ubiquity of previous calorie-restriction results suggests the same outcome might well occur in other species, possibly including humans. However, you would have to fast on alternate days. (41)__________ Cancer is the uncontrolled growth of cells. For a cancer to develop efficiently, it needs multiple mutations to accumulate in the DNA of the cell that becomes the tumor's ancestor. (42)__________ A slower rate of cell division thus results in a slower accumulation of cancer-causing mutations. (43)__________ Heavy water is heavy because the hydrogen in it weighs twice as much as ordinary hydrogen(it has a proton and a neutron in its nucleus, instead of just a proton). Chemically, however, it behaves like its lighter relative. This means, among other things, that it gets incorporated into DNA as that molecule doubles in quantity during cell division. (44)__________ Dr Hellerstein first established how much mice eat if allowed to feed as much as they want. Then he set up a group of mice that were allowed to eat only 95% of that amount. In both cases, he used the heavy-water method to monitor cell division. The upshot was that the rate of division in the calorie-restricted mice was 37% lower than that in those mice that could eat as much as they wanted—which could have a significant effect on the accumulation of cancer-causing mutations. (45)__________ [A] To stop this happening, cells have DNA-repair mechanisms. But if a cell divides before the damage is repaired, the chance of a successful repair is significantly reduced. [B] Bingeing and starving is how many animals tend to feed in the wild. The uncertain food supply means they regularly go through cycles of too much and too little food (it also means that they are often restricted to eating less than they could manage if food were omnipresent). [C] But calorie-reduction is not all the mice had to endure. They were, in addition, fed only on alternate days: bingeing one day and starving the next. So, whether modern man and woman, constantly surrounded by food and advertisements for food, would really be able to forgo eating every other day is debatable. [D] Why caloric restriction extends the lifespan of any animal is unclear, but much of the smart money backs the idea that it slows down cell division by denying cells the resources they need to grow and proliferate. One consequence of that slow-down would be to hamper the development of cancerous tumors. [E] So, by putting heavy water in the diets of their mice, the researchers were able to measure how much DNA in the tissues of those animals had been made since the start of the experiment (and by inference how much cell division had taken place), by the simple expedient of extracting the DNA and weighing it. [F] The second reason, according to Elaine Hsieh, one of Dr Hellerstein's colleagues, is that cutting just a few calories overall, but feeding intermittently, may be a more feasible eating pattern for some people to maintain than making small reductions each and every day. [G] At least, that is the theory. Until now, though, no one has tested whether reduced calorie intake actually does result in slower cell division. Dr Hellerstein and his team were able to do so using heavy water as a chemical "marker" of the process.

填空题In some developed countries the consumption of cigarettes has become more or less stabilized.

填空题The______ of philosophy is founded on the belief that knowledge is good, even if what is known is painful.(pursue)

填空题F. P. A. W. P. A. All Risks Special Risks

填空题{{B}}Passage A{{/B}}{{B}}Directions:{{/B}} {{I}}For Questions 11—15, you will hear an introduction about the life of Henry Alfred Kissinger. While you listen, fill out the table with the information you've heard. Some of the information has been given to you in the table. Write only I word or number in each numbered box. You will hear the recording twice. You now have 25 seconds to read the table below.{{/I}} Name Henry Alfred Kissinger Birthday May 27, 1993 Nationality 11 Birthplace Germany Major ______ science 12 Degree Doctorate Experience 1938 Went to the United States 1943-1946 Served in the Us. Army 1954-1969 Taught at ______ University 13 1969 Entered ______ service 14 ______ Won Nobel Peace Prize 15

填空题The tariff expert will give us a binding rule as ______ which tariff rate applies ______ these products．

填空题We have worked the whole day. Everyone is tired with the exception of John.

填空题A. Yes, it really has. B. Certainly, we"ve had all kinds of things. C. Well, completely, I"d say. D. My wife"s changed a lot, too. E. Yes, just imagine it! F. It really was a big surprise. G. I"ve given up my job. H. No. I don"t know. A: Congratulations on your big win! B: Thank you. 1 A: How has the money changed your lives? B: 2 C: 3 We"ve bought so many things. A new car, for example. B: And we"ve had a young man drive it for us. 4 I was a taxi driver for twenty years. So I"ve had enough of driving. A: And what else are you going to do with the money? B: Well, we love that sea and the sun, but we don"t see much sun in England. So I"m going to buy a little island in the Pacific. C: 5 But we shall pay all out unpaid bills first!

填空题Anger is the natural reaction we experience when we feel threatened or fru______.

填空题All the cases are strongly packed ______ compliance______your request.

填空题S______ is the technical name for the sameness relation.