Why did Amitai Etzioni say “I really feel like I failed them” (Line 4, Para. 2)？
A. He was unable to alert his students to corporate malpractice.
B. He didn’t teach his students to see business in new and different ways.
C. He could not get his students to understand the importance of ethics in business.
D. He didn’t offer courses that would meet the expectations of the business-leaders-to-be.
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The author believes that, since the signing of the Kyoto Protocol,____.
A. politicians have started to do something to better the situation
B. few nations have adopted real tough measures to limit energy use
C. reductions in energy consumption have greatly cut back global warming
D. international cooperation has contributed to solving envoronmental problems
83.A. for B. with C. over D. at
In the town was found many old people who badly needed money and care.
A B C D
如果已知全市男性在这三个职业中的录用比率，现在要检验该区的男性录用比率与全市的男性录用比率是否有显著差异，则应检验的统计量为（）。
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