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问题 选择题

某学生在上体育课时，因体育器材发生意外断裂而受伤。下面对此事认识正确的是[     ]

A．这是意外事故，不必追究任何方面责任

B．该学生应自负责任，因为活动时没有仔细检查体育器材

C．学校应承担责任，因为学校没有及时检查和维护体育器材

D．体育老师应承担责任，因为如果不使用该体育器材，就不会发生事故

答案

答案：C

单项选择题

在幻灯片播放时，如果要结束放映，可以按下键盘上的（）键。

A.Esc

B.Enter

C.Space

D.Ctrl
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单项选择题

Until recently, most population growth has occurred in relatively dense urban environments. In (91) words, even if we were witnessing rapid population growth, that would not mean that the (92) were filling in with people. (93) , the urban areas would tend to become more crowded. Historically, we find that people have moved to (94) the jobs were. Jobs were usually in ports or locations with many natural (95) . After transportation became relatively cheap, other geographical locations became (96) of economic activity. One factor that determines where people will move to, even when transportation becomes cheap, is (97) . And individuals working in cities (98) higher incomes than those working in (99) areas. Hence, population has tended until the 1970s to (100) in our major urban centers. Recently population has (101) out of the Northeast to the South and to the West for the more pleasant climates. If people did not (102) from living in large cities, there would likely be a much more even population distribution (103) our entire land area. Probably, if this (104) the case, there would be less concern over population (105) Indeed, one need only (106) a cross-country drive or plane trip to realize how (107) populated these United States really are. This is not to say that we should or should not do something about (108) growth. The shortage of people in certain areas merely demonstrates that overpopulation in the United States is really only a problem in (109) urban environments. And this problem may be slowly correcting (110) .

A．population

B．education

C．people

D．culture
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