Welcome to your favorite show－"Music Land" ! This month we are going to have some special shows on Bach, the Father of Music.
Johann Sebastian Bach was born in Germany(德国)in 1685. During his life, Bach wrote a lot of music for the church (教堂) and for his students, but he himself did not keep his own works(作品) carefully. Luckily, his second wife(妻子)saved them for him, so today we can still remember Bach through his music.
Bach married twice in his life and had 20 children. He loved his family very much. He wrote music for one of his daughters to tell her that too much coffee was bad for her health. I am now going to play a song for you from this interesting Coffee Cantata. And we will hear more about Bach after this song.
【小题1】Why is Bach’s second wife important to his music?

Welcome to your favorite show-"Music Land" ! This month we are going to have some special shows on Bach, the Father of Music.
Johann Sebastian Bach was born in Germany(德国)in 1685. During his life, Bach wrote a lot of music for the church (教堂) and for his students, but he himself did not keep his own works(作品) carefully. Luckily, his second wife(妻子)saved them for him, so today we can still remember Bach through his music.
Bach married twice in his life and had 20 children. He loved his family very much. He wrote music for one of his daughters to tell her that too much coffee was bad for her health. I am now going to play a song for you from this interesting Coffee Cantata. And we will hear more about Bach after this song.

1. 1.

   Why is Bach's second wife important to his music?

   1. A.
      She helped Bach keep his works.
   2. B.
      Many of Bach's works were for her.
   3. C.
      She gave Bach a lot of good ideas about music.
   4. D.
      Her money helped Bach write music.
2. 2.

   Why did Bach write the Coffee Cantata?

   1. A.
      To celebrate his birthday.
   2. B.
      To show people his love of coffee.
   3. C.
      To tell his child not to drink so much coffee.
   4. D.
      To make a new kind of music for the church.
3. 3.

   What is this passage mainly(主要地)about?

   1. A.
      Ways to learn Bach's music.
   2. B.
      The Bach family's history.
   3. C.
      Bach's great church music.
   4. D.
      Stories about Bach and his music.
4. 4.

   This passage may be a ______.

   1. A.
      fashion show
   2. B.
      radio show
   3. C.
      TV play
   4. D.
      talk show

1 

Three kids have been learning chemistry for only a few months. But they have already begun to challenge (挑战) a world famous scientist!

Li Weichi, Huang Runling, and Xiao Yan are from Zhongshan Huaqiao Middle School in Guangdong. They have just found a red cabbage that could be a new kind of acid-base indicator (酸碱指示剂). They want it to take the place of litmus (石蕊) paper.

"We've learnt to think of and ask questions about life by ourselves," said Li, "We work well with each other."

British scientist Robert Boyle discovered the use of litmus paper over 300 years ago. Now it is used widely in experiments all over the world.

But when the kids did some experiments in class last winter, they saw that the litmus paper didn’t turn very blue with base matter. It's hard to get a clear result.

Will there be a better indicator than litmus paper? The three kids decided to try and find out!

How? They went to collect over 40 plants in parks, gardens and markets. Then they ground (研磨) leaves, flowers and stems (茎) to get the pigments (色素) from them.

The kids mixed pigments with acid and base. They spent months watching carefully to see which paper showed the best color change. They decided it was the litmus paper!

"It's our first scientific journey, Huang said, "But it makes me want to try harder."

1.Whom did the three kids want to challenge?

A. Their chemistry teacher.

B. Their headmaster.

C. Robert Boyle

D. Thomas Edison

2.From the text, a red cabbage is a kind of ____.

A. plant　　B. animal　　C. paper　　D. liquid

3.What is widely used as the acid-base indicator now?

A. red cabbage              B. litmus paper

C. any plant                D. any flower 

4.The story mainly tells us ____.

A. how to make litmus paper

B. about the three kids' spirit

C. scientists were wrong

D. the kids are heroes