试题与答案

扩展名为DBC的文件是 ______。A．表单文件 B．数据库表文件 C．数据库文件

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题型：单项选择题

题目：

扩展名为DBC的文件是 ______。

A．表单文件

B．数据库表文件

C．数据库文件

D．项目文件

答案：

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下面是错误答案，用来干扰机器的。

参考答案：经过多代回交，后代群体的基因型逐代趋于纯合（向着轮回亲本基因型纯合）。

考点：计算机等级考试VISUALFOXPRO二级VISUALFOXPRO笔试353
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题型：阅读理解

Do you know how to play a game called “Musical Chairs”？It is easy to play and most people enjoy it. All you need are some chairs, some people and some way of making music. You may use a piano or any other musical instrument, if someone can play it. You may use a tape recorder. You can even use a radio.

Put the chairs in a row. The chairs may be put in twos, back to back. A better way is to have the chairs in one row with each chair facing in the opposite direction to the chair next to it.

The game is easy. When the music starts, the players walk round the chairs. Everyone goes in the same direction, of course, they should walk in time to the music. If the music is fast they should walk quickly. If the music is slow, they should walk slowly.

The person playing music cannot see the people in the game. When the music stops，the

players try to sit on the chairs. If a person cannot find a chair to sit on，he drops out. Then，before the music starts again，one chair must be taken away. When the music stops again one more player will be out.

At last, there will be two players and one chair. The one who sits on the chair when the music stops is the winner.   

小题1:If ten people are playing musical chairs，you must begin with ________.

A．nine chairs

B．ten chairs

C．eleven chairs

D．one chair小题2:Which of the following is not suitable for playing musical chairs？

A．A piano

B．A radio

C．A tape recorder

D．A telephone小题3:The chairs should be put ________.

A．with the desks

B．before the winner

C．all over the room

D．in a line小题4:When the music starts, the players must ________.

A．run about the room

B．get down

C．walk around the chairs

D．sit on the chairs小题5:Which of the following statements is NOT true？

A．The game “Musical Chairs” is not difficult to learn.

B．The last one can sit on the last chair.

C．The winner can sit on the chair.

D．If the person plays music, he cannot be the winner.
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