问题 多项选择题

填充墙砌体工程中,( )由于干缩值大(是烧结黏土砖的数倍),不应与其他块材混砌。

A.轻骨料混凝土小型砌块

B.空心砖

C.薄壁空心砖

D.多孔砖

E.加气混凝土砌块砌体

答案

参考答案:A,E

阅读理解

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? 

    __________________________________________________________

问答题 简答题