Hi ! I’m a chinese middle school student named Li Ping. I’m writing to tell you about an experiment we are doing at school with our science teacher. At the beginning of this school year, Mr wang1._________(show) us films and we read artcles about problems in the environment. One day he said , “ I want to know what you think. Please 2.________( not, tell ) me what we should do or must do. Tell me what each of you 3._________(do )to protect the environment.” Some students said that they thought it was impossible for a single person to protect the environment. Someone else said that scientists 4._________(work) hard to find new ways to produce energy.

　 Mr wang said that it is everybody”s job to care for the health of the planet. Someone suggested5.__________(tell) the other classes in the school. Now all 768 students at our school 6._________(work)on the project.At the end of the year, our class will write a report about what we 　7　　　 　　　　(achieve).

　 Next week I”ll think about how　　 8　　 (save ) water or keep it clean.I”m planning to try and use less water every day,and also not use so much of the things that make it dirty.Each time I turn on the tap(水龙头) I must think about how much water　　 9　　 (use).

To use less water, this is what I”ll do :

---take a shower instead of baths.

---turn off the tap while brushing my teeth.

---use less washing-up liquid when washing dishes.

If you　　 10　　 (want) to know or join us,please write an e-mail to the following address:pingli@.

We usually use two kinds of money. One kind is money made of paper and the 0　 1　 kind is money made of metal. But in the past people used many things i　 2　 of money. Some countries used salt, tea o　 3　 stones. Other countries even used some animals. Today people in some p　 4　 in the world still do not use paper money all the same.

　　 On the island of Yap, people use the h　 5　 money in the world-Yap stones. These are round, white stones w　 6　 a hole in the middle. The Yap stones do not c　 7　 from this island. The Yap men have to go to the island over 600 kilometers away to get t　 8　 .

Rich people do not carry Yap stones. Servants (仆人) follow the r　 9　 . Each servant carries a stone on a long stick over his shoulder. Today people on the island of Yap use paper money for everyday shopping. But for other things they still p　 10　 Yap stones to paper money.

30. -- __________________, Bob!-- I’m sorry, sir.

A. Don’t run in the classroom 　　B. Don’t talk with others in class

C. Don’t eat in the classroom　　 D. Don’t listen to music in class

29. -- Excuse me, could you tell me __________?--Sorry, I’m new here, too.

A. where is the nearest bank　　　 　 　B. how far is it to the bank

C. how I can get to the bank　　　　 D. is there a bank near here