题干

小宇在同学生日宴会上,敲击注入高度水的几个相同玻璃杯,为同学演奏一曲优美动听的《生日快乐》歌,如图所示注入不同高度的水是为了改变声音的(  )

  

A:响度

B:音调

C:音色

D:振幅

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B

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配对阅读 左栏是人们想要了解的问题,右栏是七个对应的电视节目名称。请根据左右两栏的信息找出相匹配的一项。

①People would like to learn about the news home and abroad every day. ____

②Parents often have trouble in getting the children away from the TV to do their homework. ____

③Even if you could buy the world, you couldn't buy a happy family, good friends or knowledge. ____

④The Lost World is an exciting American film for people, especially school students. ____

⑤People might grow plants and vegetables in the sea in about 50 years. ____

A. Money Isn't Anything     

    What is important in our life? Money or happiness? A talk about money with young people. You will find more important things here.

B. The Importance of Knowledge

    A talk between a famous teacher and some students. Without enough knowledge, you can't understand some new information. It is also good for people to communicate with others.

C. Today's News

    Do you want to know what is happening in the world? This program tells you important events around the world every day.

D. Hollywood Films

An Introduction to new American films, especially made in Hollywood.

E. Farms in the Future

Can you imagine what future farms look like? This is a program about science in the future. Many ideas will amaze you.

F. Study Tools

    The famous teacher Li Hui will tell you about some useful study tools.

G. Parents' Headache

    A discuss with parents who have trouble with their children.