题目内容
（请给出正确答案）
A long-term study of 136 pairs of twins showed that ______.
A．they lost a little ability to reason over the years
B．the only factor which declined over the years was their speed with which to perform. mental tasks
C．their memory was not as good as it had once been
D．their minds became a bit more active as they grew older
答案
B
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更多“A long-term study of 136 pairs…”相关的问题
A．Right
B．Wrong
C．Not mentioned
A．technique
B．approach
C．instrument
D．means
"We still don't know the【C2】______mechanism of the memory process that occurs during sleep, but the【C3】______of this research suggest it is possible to【C4】______up memory consolidation," Karni said.
Long-term memory【C5】______to memories that stay with us for years, such as "what" memories -- a car accident that happened yesterday -- or " how to " memories, such as one's learned【C6】______to play the drums.
Karni, who【C7】______the study in a recent issue of the journal Nature Neuroscience,【C8】______participants to learn a complex thumb-tapping sequence, then【C9】______the study subjects into two groups: one that【C10】______for an hour, and one that didn't. The people who took an afternoon snooze showed【C11】______improvement in their performance by that evening.
"After a night's sleep the two groups were at the same【C12】______, but the group that slept in the afternoon【C13】______much faster than the group that stayed【C14】______," Karni said.
【C15】______, the study also showed just how much【C16】______a 90-minute nap could help lock in long-term memories.
"Daytime sleep can【C17】______the time 'how to' memory becomes【C18】______to interference and forgetting," Karnl said. "【C19】______of 6 to 8 hours, the brain【C20】______the memory during the 90-minute nap. "
【C1】
A．snack
B．nap
C．sleep
D．exercise
【M1】
听力原文： Muslims are more likely than other religious minorities to be unemployed and live in poor housing in the most deprived parts of England, according to a government study Monday.
Half of English Muslims over the age of 25 are not involved in the formal labor market and a third live in the most deprived areas of the country, according to the study commissioned by the government.
Muslims are also particularly vulnerable to long-term illness and experience poor levels of education, said the researchers from the universities of Derby, Warwick, Birmingham and Oxford.
"Taking the Muslim population as a whole, they face some of the most acute conditions of multiple deprivation," the report said.
The report said members of the Muslim, Sikh and Hindu communities were likely to remain concentrated in the same areas because families want to stay close together and many prefer to live near their places of worship.
A government spokeswoman said the academics had reviewed a variety of data, including information from the 2001 national census.
The government will use the study in its work to encourage equal opportunities for members of all religious communities, the spokeswoman said.
Sir Iqbal Sacranie, secretary-general of the Muslim Council of Britain, said the research showed the poverty and other deep-seated problems that have contributed to the marginalization and disaffection felt among many young Muslims.
"We hope that this report serves to highlight the need to develop policies that are able to reach into these communities and fulfill their needs," Sacranie said.
According to the passage, how many universities took part in the study？
A．Three.
B．Four.
C．Five.
D．Two.
Question 1 to 5 are based on the following passage.
If you think a high-factor sunscreen(防晒霜)keeps you safe from harmful rays, you may be wrong. Research in this week's Nature shows that while factor 50 reduces the number of melanomas(黑瘤)and delays their occurrence, it can't prevent them. Melanomas are the most aggressive skin cancers. You have a higher risk if you have red or blond hair, fair skin, blue or green eyes, or sunburn easily, or if a close relative has had one. Melanomas are more common if you have periodic intense exposure to the sun. Other skin cancers are increasingly likely with long-term exposure.
There is continuing debate as to how effective sunscreen is in reducing melanomas—the evidence is weaker than it is for preventing other types of skin cancer. A 2011 Australian study of 1,621 people found that people randomly selected to apply sunscreen daily had half the rate of melanomas of people who used cream as needed. A second study, comparing 1,167 people with melanomas to 1,101 who didn't have the cancer, found that using sunscreen routinely, alongside other protection such as hats, long sleeves or staying in the shade, did give some protection. This study said other forms of sun protection—not sunscreen—seemed most beneficial. The study relied on people remembering what they had done over each decade of their lives, so it's not entirely reliable. But it seems reasonable to think sunscreen gives people a false sense of security in the sun.
Many people also don't use sunscreen properly-applying insufficient amounts, failing to reapply after a couple of hours and staying in the sun too long. It is sunburn that is most worrying-recent shows five episodes of sunburn in the teenage years increases the risk of all skin cancers.
The good news is that a combination of sunscreen and covering up can reduce melanoma rates, as shown by Australian figures from their slip-slop-slap campaign. So if there is a heat wave this summer, it would be best for us, too, to slip on a shirt, slop on(抹上)sunscreen and slap on a hat.
1.What is people's common expectation of a high-factor sunscreen？
A.It will delay the occurrence of skin cancer.
B.It will protect them from sunburn.
C.It will keep their skin smooth and fair.
D.It will work for people of any skin color.
2.What does the research in Nature say about a high-factor sunscreen？
A.It is ineffective in preventing melanomas.
B.It is ineffective in case of intense sunlight.
C.It is ineffective with long-term exposure.
D.It is ineffective for people with fair skin.
3.What do we learn from the 2011Australian study of 1,621 people？
A.Sunscreen should be applied alongside other protection measures.
B.High-risk people benefit the most from the application of sunscreen.
C.Irregular application of sunscreen does women more harm than good.
D.Daily application of sunscreen helps reduce the incidence of melanomas.
4.What does the author say about the second Australian study？
A.It misleads people to rely on sunscreen for protection.
B.It helps people to select the most effective sunscreen.
C.It is not based on direct observation of the subjects.
D.It confirms the results of the first Australian study.
5.What does the author suggest to reduce melanoma rates？
A.Using both covering up and sunscreen.
B.Staying in the shade whenever possible.
C.Using covering up instead of sunscreen.
D.Applying the right amount of sunscreen.
New Attempts to Eradicate AIDS Virus
A high-profile attempt to eradicate the AIDS virus in a few patients continues to show promise.
But researchers won't know for a year or more whether it will work, scientist David Ho told journalists here Wednesday for the Fourth Conference in Viruses and Infections.
"This is a study that's in progress," says Ho, head of the Aaron Diamond AIDS Research Center, New York.
The study involves 20 people who started combinations of anti-HIV drugs very early in the course of the disease, within 90 days of their infections. They've been treated for up to 18 months. Four others have dropped out because of side effects or problems complying with the exacting drug system.
The drugs have knocked the AIDS virus down to undetectable levels in the blood of all remaining patients, s And, in the latest development6, scientists have now tested lymph nodes and semen from a few patients and found no virus reproducing there, Ho says. "Bear in mind that？ undetectable does not equal absent," Ho says.
Ho has calculated that the drugs should be able to wipe out remaining viruses -- at least from known reservoirs throughout the body -- in two to three years. But the only way to prove eradication would be to stop the drugs and see if the virus comes back8. On Wednesday, Ho said he wouldn't ask any patient to consider that step before 2years of treatment.
And he emphasized that he is not urging widespread adoption of such early, aggressive treatment outside of trials9. No one knows the long-term risks.
But other scientists are looking at similar experiments. A federally funded study will put 300 patients on triple-drug treatments and then see if some responding well after six months can continue to suppress the virus on just one or two drugs, says researcher Douglas Richman of the University of California, San Diego. Some patients in that study also may be offered the chance to stop therapy after 18 months or more, he says.
According to the passage, the attempt to eradicate the AIDS virus
A．continues to be hopeful.
B．will be successful in a year.
C．will be successful in future.
D．will stop being hopeful.
听力原文： We all find that learning English takes effort and dedication. There are times when you seem to hit a plateau in learning. A plateau here refers to a flat spot, during which you don't feel any advancement taking place. Educational research reveals this is normal. But don't give up. Keep on studying and practicing, and you will soon feel as if you are progressing once again. Just tell yourself that it's a temporary condition. Meanwhile, study faithfully, do your best, and the rewards will be worth the struggle.
Why do we learn English？ Most people say that English now becomes an international language, and it is a very useful tool, a means to achieve something else. But specifically, what is the use of a foreign language？ We may use it to communicate freely with a native speaker. We may use it to get a job with a decent pay. We may use it to help negotiate a business contract with a foreign company. In any case, when you hurry through the last lesson of the language course, you'll have your completion certificate hanging on your wall. A certificate may mean nothing in comparison with your accomplishment. What is really significant is that you' have learnt to use that language to your advantage and benefit. A certificate may get stained, lost or be destroyed in a fire, but what's in your memory will go with you wherever you go. A language skill is worth money in today's international business world. So study well and cash in on success !
(35)
A．A temporary condition where you don't feel any progress in learning.
B．A flat and smooth spot in your study where you make fewer mistakes.
C．A long-term struggle which does not bring you any tangible rewards.
D．An educational research on language learning that is unusual and advanced.
New Attempts to Eradicate AIDS Virus
A high-profile attempt to eradicate the AIDS virus in a few patients continues to show promise.
But researchers won't know for a year or more whether it will work, scientist David Ho told journalists this Wednesday for the Fourth Conference in Viruses and Infections.
"This is a study that's in progress," says Ho, head of the Aaron Diamond AIDS Research Center, New York.
The study involves 20 people who started combinations of anti-HIV drugs very early in the course of the disease, within 90 days of their infections. They've been treated for up to 18 months. Four others have dropped out because of side effects or problems complying with the exacting drug system.
The drugs have knocked the AIDS virus down to undetectable levels in the blood of all remaining patients. And, in the latest development, scientists have now tested lymph nodes and semen from a few patients and found no virus reproducing there, Ho says. "Bear in mind that undetectable does not equal absent," Ho says.
Ho has calculated that the drugs should be able to wipe out remaining viruses--at least from known reservoirs throughout the body--in two to three years. But the only way to prove eradication would be to stop the drugs and see if the virus comes back. On Wednesday, Ho said he wouldn't ask any patient to consider that step before 2 years of treatment.
And he emphasized that he is not urging widespread adoption of such early, aggressive treatment outside of trials. No one knows the long-term risks.
But other scientists are looking at similar experiments. A federally funded study will put 300 patients on triple-drug treatments and then see if some responding well after six months can continue to suppress the virus on just one or two drugs, says researcher Douglas Richman of the University of California, San Diego. Some patients in that study 'also may be offered the chance to stop therapy after 18 months or more, he says.
According to the passage, the attempt to eradicate the AIDS virus
A．continues to be hopeful
B．will be successful in a year
C．will be successful in future
D．will stop being hopeful
第3篇
New Attempts to Eradicate AIDS Virus
A high-profile attempt to eradicate the AIDS virus in a few patients continues to show promise.
But researchers won't know for a year or more whether it will work, scientist David Ho told journalists this Wednesday for the Fourth Conference in Viruses and Infections.
"This is a study that's in progress," says Ho, head of the Aaron Diamond AIDS Research Center, New York.
The study involves 20 people who started combinations of anti-HIV drugs very early in the course of the disease, within 90 days of their infections. They've been treated for up to 18 months. Four others have dropped out because of side effects or problems complying with the exacting drug system.
The drugs have knocked the AIDS virus down to undetectable levels in the blood of all remaining patients. And, in the latest development, scientists have now tested lymph nodes and semen from a few patients and found no virus reproducing there, Ho says. "Bear in mind that undetectable does not equal absent," Ho says.
Ho has calculated that the drugs should be able to wipe out remaining viruses--at least from known reservoirs throughout the body--in two to three years. But the only way to prove eradication would be to stop the drugs and see if the virus comes back. On Wednesday, Ho said he wouldn't ask any patient to consider that step before 2 years of treatment.
And he emphasized that he is not urging widespread adoption of such early, aggressive treatment outside of trials. No one knows the long-term risks.
But other scientists are looking at similar experiments. A federally funded study will put 300 patients on triple-drug treatments and then see if some responding well after six months can continue to suppress the virus on just one or two drugs, says researcher Douglas Richman of the University of California, San Diego. Some patients in that study 'also may be offered the chance to stop therapy after 18 months or more, he says.
According to the passage, the attempt to eradicate the AIDS virus
A. continues to be hopeful
B. will be successful in a year
C. will be successful in future
D. will stop being hopeful
