问题 问答题

某地区(1995~2001年度)钢材消耗量与工农业生产总值统计数据,见表4-1。

表4-1

问题:

(1)利用上述数据计算各年度钢材需求弹性系数和平均弹性系数。若2002年产值估计为180亿元,用弹性系数法确定钢材消耗量。

(2)若从2002年起至2010年工农业总产值以8%的速度平均增长,计算2010年钢材消耗量。

(3)以数据表为基本数据(不考虑其他因素)设移动期间隔为3年,用加权移动平均法(年份间隔期为权重1,2,3)预测2002年钢材消耗量(万吨)。

(4)以数据表为基本数据(不考虑其他因素)平滑系数为0.4,利用指数一次平滑法预测2002年钢材消耗量(万吨)。

(5)简述定性预溅法所包含的内容和德尔菲法应用特点与工作程序。

答案

参考答案:

表4-7

年份
阅读理解

任务型阅读。

     Many North Americans love sport. This does not necessarily mean that they get any exercise . What

they do is watch national teams on television. They watch baseball, football , basketball, hockey, golf and

tennis-which means that for most of the weekends they sit in front of the television.(4)they  are  watch  

with them.  their friends  If  friendly

     Baseball is the great American sport and every team has fans. Nearly every big city has a team , and

as each team plays. 162 games a year, following baseball can take up a lot of time. The playing season

begins in spring and finishes in the fall World series, when the two leading teams play each other. The first

to win four games wins the Serries. Although called the World Series, Canada is the only other country to

take part in it.

     Football ,played in the fall and winter , is also very popular. It is not at all like the game called soccer.

There isn’t much kicking in American football, which has more to do with running with the ball and

knocking people down. Each team only plays 16 games during the season, and these take place on

Sundays and Monday evenings . (5)Half the country watches the final game on a Sunday , in

January.

     When there are no good games on television , Americans watch college sports. Many colleges feel

that if they want their former students to give money to their old schools, they need a winning football

team. To our surprise , this seems to be true.

Answer the following questions according to passage.

1. When do Americana and their friends sit to watch games on TV?

                                                        _    

2. How many countries are there in the World Series?

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3. Why are college teams important for colleges in America ?

                                                              

4. 连词成句

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5. 句子翻译

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