Read the following article and select the best answer. Article: Motherhood may make women smarter and may help prevent dementia in old age by bathing the brain in protective hormones , U.S.researchers reported on Thursday. Tests on rats show that those who raise two or more litters of pups do considerably better in tests of memory and skills than rats who have no babies, and their brains show changes that suggest they may be protected against diseases such as Alzheimer's .University of Richmond psychology professor Craig Kinsley believes his findings will translate into humans."Our research shows that the hormones of pregnancy are protecting the brain, including estrogen , which we know has many neuroprotective effects," Kinsley said. "It's rat data but humans are mammals just like these animals are mammals," he added in a telephone interview."They go through pregnancy and hormonal changes." Kinsley said he hoped public health officials and researchers will look to see if having had children protects a woman from Alzheimer's and other forms of age-related brain decline. "When people think about pregnancy, they think about what happens to babies and the mother from the neck down," said Kinsley, who presented his findings to the annual meeting of the Society of Neuroscience in Orlando, Florida. "They do not realize that hormones are washing on the brain.If you look at female animals that have never gone through pregnancy, they act differently toward young.But if she goes through pregnancy, she will sacrifice her life for her infant--that is a great change in her behavior that showed in genetic alterations to the brain." Question: How do scientists know "Motherhood may make women smarter"? - Some researchers have told them. - Many women say so. - They know it by experimenting on rats. - They know it through their own experience.
They know it by experimenting on rats.
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Read the following article and select the best answer. Article: Narayana Hrudayalaya, a complex of health centers based in southern India, offers low-cost, high-quality specialty care in a largely poor country of 1.2 billion people. By thinking differently about everything from the unusually high number of patients it treats to the millions for whom it provides insurance, the hospital group is able to continually reduce costs. Narayana Hrudayalaya's operations include the world's largest and most productive cardiac hospital, where the average open-heart surgery runs less than $2,000, a third or less what it costs elsewhere in India. Narayana Hrudayalaya's origins date back to 2001, when it built its massive cardiac center on the outskirts of Bangalore. But it has expanded since then into what founder Dr. Devi Shetty calls a "health city," a series of centers specializing in eye, trauma, and cancer care. Narayana Hrudayalaya now manages or owns hospitals in 14 other Indian cities. Expanding access is paired with a ongoing focus on efficiency. Typically, says Shetty, private hospitals in India focus on patients who can easily afford treatment. "We did it the other way around," he says. "This hospital is for poor people, but we also treat some rich people. We don't look at people who are sgabbily dressed and have trouble paying as outsiders. " Narayana Hrudayalaya's flagship hospital has 3,000 beds and negotiates for better prices and buys directly from manufacturers, cutting out distributors. In addition to cost-cutting, Narayana Hrudayalaya finds creative ways to make the economics work. The company started a micro-insurance program backed by the government that enables 3 million farmers to have coverage for as little as 22 cents a month in premiums . Patients who pay discounted rates are in effect compensated by those who pay full price Doing something--doing more, actually--is the point. By 2017, Shetty, 58, plans to expand from 5,000 beds throughout India to 30,000. Before becoming one of India's best-known health-care entrepreneurs, Shetty was its best-known heart... Question: We can infer from the passage that _ . - the cost of medicine care in India is very low - Shetty wouldn't have succeeded without Mother Teresa - Shetty and his colleagues are likely to make home visits now - Shetty has expanded his hospitals to most of other cities in India
Shetty and his colleagues are likely to make home visits now
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Read the following article and select the best answer. Article: As we all know,it was Thomas Jefferson who wrote the Declaration of Independence .He wrote it in two weeks,and after a few changes,it was accepted by the Congress.As a result,he became famous in America's history. Born in Virginia,Thomas Jefferson,a brilliant student at school and almost talented lawyer later,was much interested in politics. Jefferson was elected Governor of Virginia in 1779,and he was sent to France as the Representative of the American Government in 1784.Sixteen years later,at the age of 57,he was elected president after Washington and Adams. Far from a handsome man,he was is tall with long arms and big hands.Jefferson,who was an amusing talker in conversation,but a poor speaker,was generally good-natured. Jefferson was regarded as a defender of freedom Of America.As a president,he protected the right of speech.Interestingly enough,in his eight years as president,:Jefferson never said "No" to a bill !which the Congress had passed.He did a lot in organizing the new University of Virginia. Thomas Jefferson died on July the fourth,1826,the fiftieth anniversary of America's independence. Question: Thomas Jefferson was elected president of the United States in the year of _ . - 1779 - 1784 - 1800 - 1826
1800
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Read the following article and select the best answer. Article: Most of the news in the newspapers is bad but sometimes there is a story with good news. This is one of those stories. Millions of people around the world suffer from AIDS, malaria, tuberculosis, and other serious diseases. There are medicines to treat these diseases but for people in poor countries, these medicines are too expensive to buy. When a pharmaceutical company produces a new medicine, they receive a special license called a _ This license means that the new medicine or drug is protected for a period of 20 years. The company that produced the drug can fix the price of the drug and no other company is allowed to produce the same drug or a copy of the drug for 20 years. At the moment, these patents operate all over the world, both in rich countries and in poor countries. The drugs companies say that they need patents so that they can get the money to pay for research to find new drugs and medicines. In rich countries people usually have enough money to pay for these drugs but in poor countries people can't afford to buy them and cannot treat diseases like AIDS and malaria. Last month, however, a group of experts published a report which says that patents are very bad for poor countries. The report says that drug companies do not want to find new medicines for diseases of poor people in poor countries. It says that poor countries should be allowed to buy cheap drugs without patents from other countries. The authors of the report were lawyers, scientists and a senior director from the drug company Pfizer. Of course, the pharmaceuticals industry doesn't agree with the report, "We need patents so that we can develop new medicines to fight disease both in the developed and developing world," said a spokesman. But the report is the first sign that there might be a change in the patent system. This change could save millions of lives in the world's poorest countries. This really is good news. Question: What does the report say? - Poor countries should spend more money on drugs. - Poor countries shouldn't obey a pharmaceutical patent. - Poor countries should import drugs. - Poor countries should be allowed to make copies of drugs.
Poor countries should be allowed to make copies of drugs.
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