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一个人从长沙去上海看“世博”,他若选择不同的交通方式


A、其位置变化一定是相同的
B、其运动轨迹的长度一定是一样的
C、所涉及的物理量之一是位移,它为标量
D、所涉及的物理量之二是路程,它为矢量

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1. There often exits a certain gap between young people and their parents about how to use the money.
2. Some parents lack enough confidence in their children.
3. The major reason why the gap comes to existence is the lack of enough communication between parents and their children.
4. The two generations have a different priority of consideration on many important issues.
5. The young people need to use some stategies when there is a divergence with their parents.

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