本金100万元，存单原定利率10％，原定期限180天，投资人持有60天后出售，距到期

阅读下面的短文，根据短文内容回答问题。

     It began with one red paper clip (回形针) and ended with a house. Kyle MacDonald, a 26-year-old

Canadian, got a three-bedroomed house through 14 trades (交换) that started with a single red paper clip.

     Encouraged by Kyle's successful experience, now more and more young people around the world

are starting their own trading activities. They set up websites where people can trade things they do not

usually use with other people. A website called Peerflix allows people to trade their used DVDs. These

traders usually prefer face-to-face tracing, which means they don't have to worry about who is going to

pay for the delivery (递送).

     Last year, a young girl in Beijing decided to follow the example of Kyle. She started with a paper clip

and hoped to get a house in the end. After several trades she now has a piano which is worth more than

10,000 yuan. But she may still have a long way to go.

     You may be puzzled about why people are doing this. In fact, everyone in the trade activities gets things

that are useful to them. Just as Kyle said, "What's more important to a man dying of thirst in the desert-one

million dollars or a glass of water?" Kyle's words probably show why these trades are popular among young

people.

1. What did Kyle get in the end through 14 trades?

    __________________________________________________________

2. Where can people trade things they do not usually use? 

    __________________________________________________________

3. Why do these traders usually prefer face-to-face trading? 

    __________________________________________________________

4. How can the Chinese girl's dream come true? 

    __________________________________________________________

5. Why are the trade activities popular among young people? 

    __________________________________________________________

物流成本交替损益规律又称为物流成本效益二律背反效应。

《公路法》规定，哪些公路可以依法收取车辆通行费？

收益性物业价值的高低主要取决于( )。

A．未来净收益的大小

B．银行的利息率高低

C．获得净收益期限的长短

D．获得净收益的可靠性

E．物业管理服务的质量

简述选择性腐蚀腐蚀机理。