题目内容
【B3】______ our bodies require water to treat waste products, plentiful water is required for proper sanitation (卫生) —water that for much of mankind is simply not available. 【B4】______ people without adequate sanitation rose from 2.6 billion in 1990 to 2.9 billion in 1999, And sanitation is literally a matter of life and death. In a 【B5】______ statement, United Nations officials warned: "When children lack water that is fit for drinking and sanitation, virtually every aspect of their health and development is 【B6】______ ."
Food production is dependent on water. Many crops, of course, are watered by rain, but in recent times irrigation has become the key 【B7】______ the world's booming population. Today 36 percent of the world's harvest depends on irrigation.
If plentiful water flows out of every tap in our home and if we have a clean toilet (抽水) that conveniently washes out waste, it may be 【B8】______ to believe that the world is running out of an adequate supply of water. We should remember, however, that only 20 percent of mankind enjoy such 【B9】______ . In Africa many women spend as much as six hours a day 【B10】______ water.
【B1】
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【B6】
Without computer network, it would be impossible to carry on ______ any business operation
The Chinese community there, consisting of 67,000 ______, is the largest concentration of
It hasn't always been this way. "Leisure time" was almost unknown in the United States in the eighteenth and nineteenth centuries. When most people worked on farms, the workday was from sunrise to sunset every day except Sunday, which was devoted to church. Later, with the rise of factories and city populations, people worked equally long hours and had only Sunday for rest. Some people did more of the things than that they do now—attend concerts, have parties, go to restaurants, read novels, or play, sports—but to a much lesser extent.
Slowly, throughout the twentieth century, leisure time grew. Technology made farm work less burdensome, and changes in laws shortened the factory work day and week. New inventions such as the phonograph(留声机)and the radio gave people access to music and mass entertainment on a scale unknown before. People gradually became consumers of entertainment, and businesses competed fiercely for their dollars.
For many people leisure time means going somewhere—to a museum, to a concert, to a restaurant, or to a baseball game, for example. Or it means doing something such as playing volleyball, backpacking, swimming, biking, or playing in a park with their children. For other people free time means staying home with wonderful sources of entertainment, such as a VCR, stereo (立体声系统) , or cable TV with dozens of channels. Others pursue creative activities such as cooking, gardening, and home improvement. The latest stay-at-home activity is "surfing the net"—that is looking for information and entertainment on the Internet.
People in the United States are basically not much different from others in what they do in their leisure time. The real difference may lie in the energy, time, money, and sheer enthusiasm that they devote to it.
"Couch potatoes" in Paragraph 1 refers to those who ______.
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