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发表于 2016-7-11 19:22:53
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分页标题#e#
A give trillions of reponses in a second to each possible move and win the game
B function with complete data and beat the best players
C learn from chess-playing in the early stage and go on to win the game
D evaluate every possible move but may fail to give the right response each time
3 For a computer to “think” , it is necessary to ________
A mange to process as much data as possible in a second
B program it so that it can learn from its experiences
C prepare it for chess-playing first
D enable it to deal with unstructured situations
4 The author’s attitude towards the Defense Department is____
A critical B unconcerned C positive D negative
5 In the author’s opinion,______
A winning a chess game is an unimportant event
B serious human problems shouldn’t be regarded as playing a game
C ecological problems are more urgent to be solved
D there is hope for more intelligent computers
1 b 2 c 3 b 4 c 5 d
2 You Call This a Good Economy
这能称之为上佳经验
1 You have to have lived in the 1950s and 1960s to have experienced a good economy. In the period between 1950 and 1970 it was the rule—rather than the exception—that an ordinary family, without higher education, could sustain itself decently on the income of a single breadwinner(养家糊口的人). In 1955, when I was 19 and living in Brooklyn, N. Y., my father, who had a sixth-grade education, maintained our family of five on a wage of $82 a week as a bookbinder. My mother taught us fairness and compassion; my father, discipline and enterprise.
2 The U. S. economy in those years was good. Then where did this good economy go? It was inflated away. The price of gold, which I take as proxy for the prices of all goods, was $35 an ounce in those years. It is at roughly ten times that price today.
3 There is another answer, though: inflation caused the entire work force to be moved into higher tax groups, thus reducing after-tax purchasing power. That is, my father’s bindery job in1954 paid $82 a week, with $80 after deductions; today, at $ 820 per week the net would be $662.
4 To ordinary people, the economy doesn’t look very good at all. After-tax incomes continue to decrease in purchasing power. The jobs offered in the employment ads pay only a little more than the minimum wage, maybe $5 an hour, which, after payroll deductions, yields $4 an hour. Compare that with minimum-wage jobs of the early 1950s, when 75 cents was worth today’s $7.50 before and after taxes.
Notes
1 Brooklyn: a district of New York city
2 inflate:通货膨胀
3 proxy: the authority to act for another
4 payroll: a list of employees and the wages due to each
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