问题 解答题
木匠制作了一个三角形木板,量得此三角形的三边长恰好为5cm,10cm,5
3
cm,问这个三角形木板是否为直角三角形?若是,请说明理由;若不是也请说明.
答案

∵52+(5

3
2=102

∴这个三角形木板是直角三角形.

阅读理解

阅读理解。

    The way that people all over the world watch film has changed these years. People don't just go to the

films any more. They take the films home! VCR (录像机), has made this possible, and it has helped change

people's lives.

    VCRs make it possible for us to watch films at home instead of the cinema. People can just go to a video

store near their house, rent one or more films for a day or a weekend, and watch them in their own houses.

They cost just a few dollars each day. Many different films are on videotape, from exciting films to

interesting plays.

    Watching a film at home can be very easy, and a lot cheaper. VCR owners can make snacks and sit back

and enjoy a film with family and friends. They can stop the film to make more snacks, answer the phone, or

take care of the baby. There are no lines to stand in, no tikets to buy, and no uncomfortable cinema seats.

1. What has changed people's way of watching film? [ ]

A. TV

B. The computer

C. The VCR

D. The film

2. How do people usually get videotapes to watch films at home? [ ]

A. To rent videotapes

B. To buy videotapes

C. To borrow videotapes

D. To sell videotapes

3. Is it expensive to rent a videotape for one day?[ ]

A. No, it isn't.

B. Yes, it is.

C. No, it is.

D. I don't know.

4. What does the write prefer, watching video films at home or seeing films at the cinema? [ ]

A. He prefers watching video films at home.

B. He prefers seeing films at the cinema.

C. Both A and B.

D. Neither A and B.

5. Why does the writer say watching a film at home can be very easy and a lot cheaper? [ ]

A. VCR owners can makev snacksand sit back and enjoy a film with family and friends.

B. They can stop the film to make more snacks, answer the phone, or take care of the baby.

C. There are no lines to stand in, no tickets to buy, and no uncomfortable cinema seats.

D. All of the above.

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