题目内容
Every living thing has what scientists call a biological clock that controls behavior. It tells plants when to 62 flowers and insects when to leave protective cocoon(茧) and fly away. And it tells animals and human beings when to 63 , sleep and seek food. It controls our body temperatures, the 64 of some hormones and even dreams. Events 65 the plant and animal affect its actions. Scientists recently found that a tiny animal called Siberian hamster changes the color of its 66 because of the number of hours of 67 . In shorter days of winter its fur becomes white. The fur becomes gray-brown in longer 68 of daylight in summer. 69 signals control other biological clocks. German scientists found that some internal one seems to order birds to begin their 70 flights two times each year. Birds prevented from flying become 71 when it is time for the trip. 72 they become can again when the time of the flight has ended. A mix of outside and internal events controls some biological clocks；such things as heartbeat and the daily change from sleep to walking take place because of both external and internal signals. Scientists are beginning to learn 73 parts of the brain contain the biologicaI clocks. A researcher at Harvard University. Dr. Martin Moore Ede, said a small group of cells near the front of the brain seemed to control the 74 of some of our actions. Probably there are other cells to control other body activities. He is studying 75 they affect the way we do our work. Most of us have great difficulty if we 76 often change to different work hours. 77 call take many days for a human body to 78 a major change in work hours. Industrial officials should have a better 79 of biological clocks and how they affect workers. He said such an understanding could 80 sickness and accidents at work, and would help increase 81 .
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Questions 47 to 51 are based on the following passage. When Toyota Motor Corp. moved one of its divisions into an environmentally friendly, or“green”, building in Torrance three years ago, it expected to save on its energy bills. The building offered natural lighting, electricity-generating rooftop solar panels and water recycling. But something else also happened. Employee morale jumped while absenteeism(旷工) fell. The overall energy and worker productivity savings more than offset the added cost of making the facility environmentally friendly. “The lighting is easier on the eyes and on the nerves, ”Toyota employee Mary Jo Moutsios said. “I take a sense of pride in working in this building. It’s pleasant and feels more productive. ” Results like Toyota’s are helping to spark a budding“green revolution”in American workplaces. The movement is starting to change how office buildings are designed and could render thousands of existing offices obsolete. Employers including Goldman, Sachs&Co. , Wal-Mart Stores Inc. and Harley-Davidson Inc. are starting to ask for buildings with more natural light, fresher air and fewer toxic materials in the paint, carpeting and other finishes. Los Angeles, Salt Lake City and Chicago are among many cities requiring new public buildings to be green. Municipalities are offering incentives, such as faster construction approvals and reduced permit fees, to get the private sector to follow suit. Although the green movement is in its infancy, its endorsement(认可) by a growing number of prestigious employers, developers and cities is seen as giving a shot in the arm to the nation’s environmental movement as concern about the effects of global warming and environmental pollution spread. More than $7.7 billion of office buildings nationwide are up for official green certification, versus about $790 million in 2000．Among the more notable new green towers is World Trade Center in New York. a 52-storey skyscraper that replaced a building at the same address that was destroyed in the 2001 terrorist attacks. Although the green movement is still in its early age, it has been______.
政府宏观政策失误或者宏观政策变动过于频繁会对期货市场造成不良影响。( )
Every living thing has what scientists call a biological clock that controls behavior. It tells plants when to 62 flowers and insects when to leave protective cocoon(茧) and fly away. And it tells animals and human beings when to 63 , sleep and seek food. It controls our body temperatures, the 64 of some hormones and even dreams. Events 65 the plant and animal affect its actions. Scientists recently found that a tiny animal called Siberian hamster changes the color of its 66 because of the number of hours of 67 . In shorter days of winter its fur becomes white. The fur becomes gray-brown in longer 68 of daylight in summer. 69 signals control other biological clocks. German scientists found that some internal one seems to order birds to begin their 70 flights two times each year. Birds prevented from flying become 71 when it is time for the trip. 72 they become can again when the time of the flight has ended. A mix of outside and internal events controls some biological clocks；such things as heartbeat and the daily change from sleep to walking take place because of both external and internal signals. Scientists are beginning to learn 73 parts of the brain contain the biologicaI clocks. A researcher at Harvard University. Dr. Martin Moore Ede, said a small group of cells near the front of the brain seemed to control the 74 of some of our actions. Probably there are other cells to control other body activities. He is studying 75 they affect the way we do our work. Most of us have great difficulty if we 76 often change to different work hours. 77 call take many days for a human body to 78 a major change in work hours. Industrial officials should have a better 79 of biological clocks and how they affect workers. He said such an understanding could 80 sickness and accidents at work, and would help increase 81 .
Questions 57 to 61 are based on the following passage. The current emergency in Mexico City that has taken over our lives is nothing. I could ever have imagined for me or my children. We are living in an environmental crisis, an air-pollution emergency of severity. What it really means is that just to breathe here is to play a dangerous game with your health. As parents, what terrorizes us most are reports that children are at higher risk because they breathe more times per minute. What more can we do to protect them and ourselves Our pediatrician’s(儿科医师的) medical recommendation was simple：abandon the city permanently. We are foreigners and we are among the small minority that can afford to leave. We are here because of my husband’s work. We are fascinated by Mexico—its history and rich culture. We know that for us, this is a temporary danger. However, we cannot stand for much longer the fear we feel for our boys. We cannot stop them from breathing. But for millions, there is no choice. Their lives, their jobs, their futures depend on being here. Thousands of Mexicans arrive each day in this city, desperate for economic opportunities. Thousands more are born here each day. Entire families work in the streets and practically live there. It is a familiar sight：as parents hawk goods at stoplights, their children play in the grassy highway dividers, breathing exhaust fumes. I feel guilty complaining about my personal situation；we won’t be here long enough for our children to form the impression that skies are colored only gray. And yet the government cannot do what it must to clad this problem. For any country, especially a developing Third World economy like Mexico’s, the idea of barring from the capital city enough cars, closing enough factories and spending the necessary billions on public transportation is simply not an option. So when things get bad, as in the current emergency, Mexico takes half measures—prohibiting some more cars from circulating, stopping some factories from producing that even its own officials concede aren’t adequate. The word “emergency”implies the unusual. But when daily life itself is an emergency, the concept loses its meaning. It is human nature to try to adapt to that which we cannot change, or to mislead ourselves into believing we can adapt. According to the passage, people in Mexico City are faced with______.
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