In the past, going to a piano teacher was the only way to learn how to play the piano. You could have one lesson a week. If you didn’t have private(个人的) lessons, you could still learn piano, but you would have to learn it by yourself. This was easy for some, but very difficult for most. However, with technology as it is today, there is at last another way that you can take piano lessons. You can take an online course.
An online course can save you lots of money. If a private lesson costs 30 or 40 dollars per week, just think about how quickly that adds up. You can take a complete online course in piano by spending a small part of the money that you would pay for taking weeks of private lessons. Also, private lessons are only usually one hour per week. If you have questions during the rest of the week, or if you forget something that your teacher said, you will have to wait for your next lesson to continue your learning. However, online piano courses are quite different.
With an online piano course, you can work at your own pace(进度). You can also take as many lessons per week as you’d want, or go back and listen to your last lesson if you have forgotten anything. Most adults who want to learn how to play the piano enjoy being able to go back and listen to lessons they watched before. It can give you a good idea of what you were doing right, what you were doing wrong, and what you should be doing before the next lesson.
Of course, if you need someone to sit beside you and give you instant feedback(及时反馈) while you are playing, you are not suggested to choose an online course. But most adult learners think they can get their own type of feedback by watching the course again and again.
【小题1】       is not mentioned in the passage to learn to play the piano.
A.Going to a piano teacher        B. Asking experts for information   C. Teaching oneself
【小题2】Going to a piano teacher is much more        than having an online piano course.
A. expensive                   B. convenient                  C. interesting
【小题3】If you choose an online piano course, you can          .
A. ask questions whenever you want          
B. watch the lessons whenever you’d like  
C. get some advice while you are playing the piano.
【小题4】Most adults like to go back and listen to the lessons again because         .
A. they needn’t spend any extra money          
B. they can ask some questions   
C. they can know what they were doing right, what they were doing wrong
【小题5】How many advantages of an online piano course have been introduced in the passage?
A. 2                           B. 3                         C. 4

A sunflower is a sunflower. A mobile phone is a mobile phone. But can you combine (联合) the two to do something for your local environment? As early as next year it may well be possible. When you have finished with your mobile phone, you will be able to bury（埋） it in the garden or a plant pot and wait for it to flower.

A biodegradable (生物可降解的) mobile phone was, this month, introduced by scientists. It is hoped that the new type of phone will encourage people to recycle. Scientists have come up with a new material over the last five years. It looks like any other plastic, but overtime it can break down into the soil without giving out any poisonous chemicals. British researchers used the new material to develop a phone cover with a sunflower seed. When this cover turns into waste, it forms nitrates (硝酸盐). These feed the seed and help the flower grow. “We’ve only put sunflower seeds into the cover so far. But we are trying to find out which flowers would perform best. Maybe we could put roses in next time.” said one scientist.

As phone technology is developing so quickly, people are always throwing their mobiles away. This means producers are under pressure to find ways of recycling them. Some 650 million mobile phones have been sold this year. Most of them will be thrown away within two years, adding plastic, heavy metal and chemical waste to the environment. A biodegradable cover can reduce the harm to nature, according to the scientists. “The seed is released and the flower grows in the pot so you don’t have to worry about the phone when you have finished using it,” said Kerry Kirwan, the leader of the research team, which is based at the University of Warwick in Britain.

71. How do people deal with the used mobile phone at present?

A. They throw it away.                         B. They bury it in the garden.

C. They recycle it.                               D. They turn it into nitrates.

72. Scientists do this type of research in order to ________.

A. make the mobile phones more beautiful            B. to deal with environmental problems

C. to find a new way to grow flowers                  D. to produce more mobile phones

73. What does the underline phrase “break down” mean?

A. 抛锚                        B. 崩溃                       C. 撞毁                       D. 分解

74. We can infer (推断) from the passage that ________.

A. the new type of mobile phones is already on the market

B. some 650 million mobile phones will be thrown away

C. a group of British researchers are doing the research

D. other flowers may be used in this type of mobile phones

75. The main idea of the passage is ________ .

A. the relationship between high tech and environment               B. the phone technology is developing

C. phone can be turned into flowers                                  D. mobile phone and environment