单项选择题

When I decided to quit my full time employment it never occurred to me that I might become a part of a new international trend. A lateral move that hurt my pride and blocked my professional progress prompted me to abandon my relatively high profile career although, in the manner of a disgraced government minister, I covered my exit by claiming"I wanted to spend more time with my family". Curiously,some two-and-a-half years and two novels later,my experiment in what the Americans term "downshifting" has turned my tired excuse into an absolute reality. I have been transformed from a passionate advocate of the philosophy of "having it all", preached by Linda Kelsey for the past seven years in the pages of She magazine, into a woman who is happy to settle for a bit of everything. I have discovered, as perhaps Kelsey will after her much-publicized resignation from the editorship of she after a build-up of stress, that abandoning the doctrine of "juggling your life", and making the alternative move into "downshifting" brings with it far greater rewards than financial success and social status. Nothing could persuade me to return to the kind of life Kelsey used to advocate and I once enjoyed: 12-hour working days, pressured deadlines, the fearful strain of office politics and the limitations of being a parent on "quality time". In America, the move away from juggling to a simpler, less materialistic lifestyle is a well- established trend. Downshifting--also known in America as "voluntary simplicity"--has, ironically, even bred a new area of what might be termed anti-consumerism. There are a number of bestselling downshifting self-help books for people who want to simplify their lives; there are newsletters, such as The Tightwad Gazette, that give hundreds of thousands of Americans useful tips on anything from recycling their cling-film to making their own soap; there are even support groups for those who want to achieve the mid-’’90s equivalent of dropping out. While in America the trend started as a reaction to the economic decline--after the mass redundancies caused by downsizing in the late’’ 80s--and is still linked to the politics of thrift, in Britain, at least among the middle-class downshifters of my acquaintance, we have different reasons for seeking to simplify our lives. For the women of my generation who were urged to keep juggling through the ’’ 80s, downshifting in th mid-’’90s is not so much a search for the mythical good life--growing your own organic vegetables, and risking turning into one--as a personal recognition of your limitations. The writer’’ s experiment shows that downshifting______.

A.enables her to realize her dream
B.helps her mold a new philosophy of life
C.prompts her to abandon her high social status
D. leads her to accept the doctrine or She magazine
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Albert Einstein once said, The whole of science is nothing more than a refinement of everyday thinking. The first thing scientists must do is to ask a question or identify a problem to be investigated. 46) Then scientists working on this problem collect scientific data, or facts, by making observations and taking measurements, which must be verified or confirmed by repeated observations and measurements, ideally by several different investigators.47) The primary goal of science is not facts in and of themselves, but a new idea, principle, or model that connects and explains certain facts and leads to useful predictions about what should happen in nature. Scientists working on a particular problem try to come up with a variety of possible explanations or scientific hypotheses of what they (or other scientists)observe in nature. Then experiments are conducted (and repeated to be sure they are reproducible)to test the deductions or predictions for each hypothesis so as to arrive at the most plausible or useful hypothesis.48) If many experiments by different scientists support a particular hypothesis, it becomes a scientific theory―a well-tested and widely accepted idea, principle, or model that usually ties together and explains many facts that previously appeared to be unrelated. Converting a scientific hypothesis to a scientific theory is a difficult process, often requiring decades, even hundreds of years. To scientists, theories are not to be taken lightly ,for they are ideas or principles stated with a high degree of certainty because they are supported by a great deal of evidence.Another end result of science is a scientific law ―a description of what we find happening in nature over and over in the same way, without known exception. The more complex the parts of nature scientists study, the more difficult it becomes to discover scientific laws. 49) There are many scientific laws of physics and chemistry, only a few in biology, and even fewer (and less reliable ones) in fields involving complex interactions of multiple factors ( variables), such as ecology, climatology( study of climate) ,and social sciences such as economics and politics.The scientific process requires not only logical reasoning, but also imagination, creativity, and intuition. According to physicist Albert Einstein, There is no completely logical way to a new scientific idea. 50) Intuition, imagination, and creativity are as important in science as they are in poetry, art, music, and other great adventures of the human spirit that awaken us to the wonder, mystery, and beauty of life, the Earth and the universe.