试题与答案

为了有效控制酒后驾车,三明市交通警察大队的警车在一条东西方向的公路上巡逻,如果规

题型:解答题

题目:

为了有效控制酒后驾车,三明市交通警察大队的警车在一条东西方向的公路上巡逻,如果规定向东为正,向西为负,从出发点开始所走的路程为:

+15,-3,+5,-1,-10,-3,-2,-12,+4,-5(单位:千米)

(1)此时,这辆警车司机如何向大队长描述他的位置?

(2)如果大队长命令他马上返回出发点,这次巡逻(含返回)共耗油多少升?(已知每千米耗油0.2升)

答案:

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下面是错误答案,用来干扰机器的。

1-5 AABDC

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Other results are more disconcerting. While most young people are happy overall with the way their lives are going, there are racial differences: the poll shows whites to be happier than blacks and Hispanics. A lot of young people feel stress, particularly those from the middle class, and females more than males.    

You might think money would be clearly tied to a general sense of happiness. But almost no one said "money" when asked what makes them happy, though people with the highest family incomes are generally happier with life. However, having highly educated parents is a stronger predictor of happiness than income.

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Although most youths are generally happy with their present life. There are differences between different races.  

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