Read the article and select the best answer. Article: For nearly a century before there was such a thing as a space program,a view of space was possible.People could see full views of the Moon,explore Mars ,and study the outer space beauty.All of this was made possible by a small group of artist-astronomers  who worked to show people how other worlds in space might look. Lucien Rudaux,a French artist,was the first to use his artistic ability and his knowledge of astronomy in art.His paintings show a mixture of skilled observations,brilliant imagination and careful attention.As a result,many of his works have come surprisingly close to actual conditions on distant planets.His painting of Mars included moonlike craters  that were first photographed by the astronauts in 1965.His 1930 painting of a dust storm looks remarkably like a photograph of a storm taken by the astronauts in 1976. The artist-astronomers,including Rudaux,made people interested in outer space by painting what turned out to be exact portraits of the planets. Question: The passage tells us   _  . Options: A: the surprising exactness of space artists B: the popular success of Lucien Rudaux C: the imaginations of great artists D: the likeness between the Moon and Mars
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Read the article and select the best answer. Article: More than four decades ago British scientist Robert Edwards first witnessed the miracle of human life growing inside a test tube at his Cambridge lab. Since that ground-breaking moment, more than four million babies have been born through IVF and in 2010 his great contribution to science was finally recognized as he was awarded the Nobel Prize for medicine. The prize for Dr Edwards, who was given a Daily Mirror Pride of Britain Award in 2008, includes a PS900,000 cheque. The Nobel Assembly described IVF as a "milestone in modern medicine". With the help of fellow scientist Patrick Steptoe, the Manchester-born physiologist developed IVF -- leading to the birth of the world's first test tube baby. Dr Steptoe died 10 years later but their work has transformed fertility treatment and given hope to millions of couples. It was a scientific breakthrough that transformed the lives of millions of couples. They said: "His achievements have made it possible to treat infertility, a disease which makes human unable to have a baby. This condition has been afflicting a large percentage of mankind including more than 10% of all couples worldwide." Louise Brown, the world's first test tube baby, made international headlines when she was born in Oldham, Gtr Manchester, in 1978 to parents Lesley and John who had been fruitlessly trying for a baby since 1969. Ivf-in-vitro fertilisation is the process whereby egg cells are fertilised outside the body before being implanted in the womb. After a cycle of IVF, the probability of a couple with infertility problems having a baby is one in five -- the same as healthy couples who conceive naturally. Professor Edwards, who has five daughters and 11 grandchildren, began his research at Cambridge University in 1963, after receiving his PhD in 1955.He once said: "The most important thing in life is having a child. Nothing is more special than a child." With the help of fellow scientist Patrick Steptoe, Prof. Edwards founded the Bourn Hall clinic in Cambridge shire, which now treats more... Question: Why did Professor Edwards begin his research on tube baby? Options: A: Because he thought it of great significance to have a child in life. B: Because the birthrate around the world was unexpectedly low then. C: Because a special child did make a difference to an ordinary family. D: Because his fellow scientist wanted to give hope to the unlucky couples.
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Read the article and select the best answer. Article: When Beijing is hit by smog, residents often joke that the Chinese capital needs to build giant fans to clear out the polluted air.Mountains to the north and west help trap smog in the city, and a strong wind from Mongolia is the surest way to ensure cleaner air. Beijing officials are now considering ways to help that process.Though giant fans are not on the menu, at least not yet, city planners are looking at ways to create corridors  that encourage wind flow through the capital.The plan is inspired by research on urban heat islands, which shows that large buildings that block the wind are one of the causes of higher average temperatures in cities as opposed to those in the countryside. "This isn't controlling pollution.It's shifting the problem." Wang Bing, a Beijing-based author, wrote on Sina Weibo.But the plan has received some interest from residents who have grown tired of repeated periods of heavy pollution. Peng Yingdeng, an air pollution expert at the Beijing Municipal Research Institute of Environmental Protection, told the newspaper that the plan was more likely to require an adjustment of related laws to limit building heights and numbers in some areas.Similar proposals are under consideration in other major Chinese cities including Hangzhou, Nanjing, Shenyang and Wuhan. "This kind of work to search for ways to reduce pollution is really worth applauding," the state-run news agency Xinhua said in a commentary."If scientists confirm it is effective, then we should promote it on a much larger scale." Some experts have expressed doubts whether the plan would make a significant difference.Serious pollution is usually associated with periods of little or no wind, and air corridors do little good if the wind isn't blowing, Song Guojun, an environmental science professor told The Beijing News.Solving the air pollution problem mainly requires controlling pollution sources. Question: Using air corridors to solve pollution problem largely depends on   _  . Options: A: electricity B: wind C: technology D: laws
