题目内容
（请给出正确答案）
A.practiced
B.administered
C.ordered
D.watched
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更多“Large doses have been for quit…”相关的问题
It can be seen that large doses of multivitamins______.
A．may bring about serious side effects
B．may help prevent excessive bleeding
C．are likely to induce the blockage of arteries
D．are advisable for those with vitamin deficiencies
It can be seen that large doses of multivitamins ________.
A．may bring about serious side effects
B．may help prevent excessive bleeding
C．are likely to induce the blockage of arteries
D．are advisable for those with vitamin deficiencies
We can only sympathize with the unfortunate man who had to stop his ear soon after setting out from a country village to drive to London. Heating a strange noise from the back of the car, he naturally got out to have a look. He examined the wheels carefully but as he found nothing wrong, he continued on his way. The noise began almost immediately and now it was louder than ever. Quickly turning his head, the man saw what appeared to be a great black cloud following the car. When he stopped at a village further on, he was told that a queen bee must be hidden in his car as there were thousands of bees nearby.
On learning this, the man realized that the only way to escape would be to drive away as quickly as possible. After an hour's hard driving, he arrived in London where he parked his car outside a hotel and went in to have a drink. It was not long before a customer who had seen him arrive hurried in to inform. him that his car was covered with bees. The poor motorist telephoned the police and explained what had happened. The police decided that the best way to deal with the situation would be to call a bee-keeper. In a short time, the bee-keeper arrived. He found the unwelcome passenger hidden near the wheels at the back of the car. Very grateful to the motorist for his unexpected gift, the keeper took the queen and her thousands of followers home in a large box. Equally grateful, the motorist drove away in peace, at last free from the "black cloud" which had hung over his car.
(30)
A．A big noise.
B．A strange noise.
C．A stranger's noise.
D．A child's noise.
Testing Times
Researchers are working on ways to reduce the need for animal experiments, but new laws may increase the number of experiments needed.
The current situation
In an ideal world, people would not perform. experiments on animals. For the people, they are expensive. For the animals, they are stressful and often painful.
That ideal world, sadly, is still some way away. People need new drugs and vaccines. They want protection from the toxicity of chemicals. The search for basic scientific answers goes on. Indeed, the European Commission is forging ahead with proposals that will increase the number of animal experiments carried out in the European Union, by requiring toxicity tests on every chemical approved for use within the union's borders in the past 25 years.
Already, the commission has identified 140,000 chemicals that have not yet been tested. It wants 30,000 of these to be examined right away, and plans to spend between ~ 4 billion — 8 billion ($5 billion—10 billion) doing so. The number of animals used for toxicity testing in Europe will thus, experts reckon, quintuple (翻五倍) from just over lm a year to about 5m, unless they are saved by some dramatic advances in non-animal testing technology. At the moment, roughly 10% of European animal tests are for general toxicity, 35% for basic research, 45% for drugs and vaccines, and the remaining 10% a variety of uses such as diagnosing diseases.
Animal experimentation will therefore be around for some time yet. But the search for substitutes continues, and last weekend the Middle European Society for Alternative Methods to Animal Testing met in Linz, Austria, to review progress.
A good place to start finding alternatives for toxicity tests is the liver--the organ responsible for breaking toxic chemicals down into safer molecules that can then be excreted. Two firms, one large and one small, told the meeting how they were using human liver cells removed incidentally during surgery to test various substances for long-term toxic effects.
One way out of the problem
PrimeCyte, the small firm, grows its cells in cultures over a few weeks and doses them regularly with the substance under investigation. The characteristics of the cells are carefully monitored, to look for changes in their microanatomy.
Pfizer, the big firm, also doses its cultures regularly, but rather than studying individual cells in detail, it counts cell numbers. If the number of cells in a culture changes after a sample is added, that suggests the chemical in question is bad for the liver.
In principle, these techniques could be applied to any chemical. In practice, drugs (and, in the case of PrimeCyte, food supplements) are top of the list. But that might change if the commission has its way: those 140,000 screenings look like a lucrative market, although nobody knows whether the new tests will be ready for use by 2009, when the commission proposes that testing should start.
Other tissues, too, can be tested independently of animals. Epithelix, a small firm in Geneva, has developed an artificial version of the lining of the lungs. According to Huang Song, one of Epithelix's researchers, the firm's cultured cells have similar microanatomy to those found in natural lung linings, and respond in the same way to various chemical messengers. Dr. Huang says that they could be used in long-term toxicity tests of airborne chemicals and could also help identify treatments for lung diseases.
The immune system can be mimicked and tested, too. ProBioGen, a company based in Berlin, is developing an artificial human lymph node (淋巴结) which, it reckons, could have prevented the neardisastrous consequences of a drag trial held in Britain three months ago, in which (despite the drag having passed animal tests) six men suffered multiple organ failure and ne
A．Y
B．N
C．NG
The suggestion that bees were not pulling their weight met with skepticism from British beekeepers.Glyn Davies，the President of the British Beekeepers Association，said that bees were not lazy but efficient，“At any particular stage in its energy by doing nothing.Each bee has a unit of life energy and the faster it works，the faster it dies.They are being very wise and perhaps humans should try to follow their example instead of running about like headless chickens.”
The idea of the busy bee is several thousand years old.One current author who has nothing but admiration for the bee is Paul Theroux，the novelist and part-time beekeeper.“I have never seen a bee sleeping.My bees never stop working，”he said.Mr.
Theroux added that Prof.Menzel’s research could have been affected by his national origins.“Perhaps in comparison to the German rate of work，the bee does look lazy，”he said.
Few people think that the busy bee idea will go away，despite the efforts of Prof.Menzel.It seems absurd to apply the word“lazy”to a colony of creatures capable of producing something so extraordinary as honeycomb.The truth is that bees give us an inferiority complex that is not entirely unjustified.In fact，the worship of bees seems to be undergoing a renaissance.IBM recently ran a series of ads drawing on the“waggle dance”of bees，telling businessmen to“make your business waggle.”
36.Prof.Randolf Menzel’s latest research .
A.challenges our knowledge of the relations among bees
B.confirms our knowledge of the relations among bees
C.challenges our perception of the nature of bees
D.confirms our perception of the nature of bees
37.Prof.Randolf Menzel would disagree that .
A.bees are hard working
B.bees are quick learners
C.bees have intelligence
D.bees have good memory
38.According to Glyn Davies，what should we learn from bees？
A.How to work faster.
B.How to live longer.
C.How to cooperate with each other.
D.How to improve work efficiency.
39.It could be inferred from Paragraph 3 that the Germans .
A.are easily affected by their national characters
B.are extremely busy and hard working
C.have many things in common with bees
D.tend to look down upon lazy people
40.The IBM ads in the passage are used to .
A.show the popularity of the idea of busy bees
B.emphasize the negative image of busy bees
C.initiate public discussions on the busy bee image
D.question the comparison of busy bees to humans
听力原文：M: Hi, Susan. Where have you been？
W: Hi, David. I was just at the library. I have to hand in my biology paper tomorrow.
M: Tomorrow？ Oh, no[ I thought it wasn't due until next week.
W: Oh. Don't worry. It is due next Tuesday. But I'm going away for the weekend and won't be back till Monday night.
M: Oh, where are you going？
W: Philadelphia. We're having a family reunion. It's my grandmother's eightieth birthday.
M: Great! How many people will be there？
W: Around sixty.
M: It seems that your family are pretty close.
W: You said it. So have you started working on your biology paper？
M: Yeah. I'm doing it on bees and how they're able to recognize whether another bee is related to them.
W: How can they tell？
M: They use their sense of smell. The bees guard their nests this way. If another bee approaches the nest, the guard determines if the new bee is familiar. If it is, it's allowed to enter.
W: Sounds interesting. Can other insects do this？
M: Well, as far as I am concerned, some wasps can. Each wasp nest has a special combination of plant fibers and so the wasps that live there have a unique smell.
W: Urn, it sounds like that the bees are picky about who comes to their family reunion.
(12)
A．They're roommates.
B．They're classmates.
C．They're cousins.
D．They're lab partners.
听力原文：W: How did you do in the final exam of Accounting？
M: I thought it should have been easy for me, but when half an hour passed, there was nothing on the paper but my name and student number on the top of the first page.
Q: What can we learn from the conversation？
(15)
A．The man passed the exam.
B．The man found the exam too difficult.
C．The man finished the exam in half an hour.
D．The man forgot to write his name and student number.
A.is
B.have
C.are
D.is being
The writer is sorry to have noticed that______.
A．people in large cities tend to excuse criminals
B．people in small towns still stick to old discipline and standards
C．today' s society lacks sympathy for people in difficulty
D．people in disadvantaged circumstances are engaged in criminal activities
