Passage 2 Questions 6 to 10 are based on the following passage: The city has always been an engine of intellectual life, from the 18th-century cafes of London, where citizens gathered to discuss chemistry and politics, to the Left Bank bars of modern Paris, where Picasso talked about modem art. Without the metropolis, we might not have had the great art of Shakespeare. And yet, city life isn’t easy. Now scientists have begun to examine how the city affects the brain, and the results are depressing. Just being in an urban environment, they have found, impairs (损害) our basic mental processes. (78) After spending a few minutes on a crowded city street, the brain is less able to hold things in memory, and suffers from reduced self-control. While it’s long been recognized that city life is exhausting, this new research suggests that cities actually dull our thinking, sometimes dramatically so. One of the main forces at work is a complete lack of nature, which is surprising
A. citizen
B. nature
C. city
D. stress
某地区有一个空调生产企业，由一个公司总部和三个车间组成。2008年该公司共生产空调5万台，其中售出4万台，每台平均出厂价为1500元。全年制造成本及各项费用3000万元，其中职工工资500万，原材料、能源、广告费等物质和非物质消耗2000万元，应交增值税500万。该地区统计部门在2008年度工业统计时将计算该企业的相关指标。
根据上述资料，计算并回答以下问题，在备选答项中选取正确答案。
Until recently, the British system of money was not based on the decimal system. But in February, 1971, Great Britain (41) its currency to the decimal system(十进制). The pound is still the basic monetary unit, but it is now made up of 100 pennies (42) pence. In the new system, there are six coins. The coins are known (43) their values. They have the following values: 1/2 pence or penny, 1 penny, 2 pence, 5 pence, 10 pence, and 50 pence.
In Great Britain, the word note is used to refer to paper money. The notes you would most probably use if you (44) England are the one-pound note, the five-pound note, and the ten-pound note.
It isn’t (45) for a country to convert(转换) its currency from one system to (46) . In England the Decimal Currency Board spent $ 3 million to explain the new system to the people.
The change (47) the decimal method of counting is to go much (48) than the money system. Great Bri
A. machine
B. machinery
C. instrument
D. device
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