生产瓶装水的不良影响。故选D。

3．According to the passage, what drink sells best in the U．S.A.?

A．Beer.　　　　　　　 B．Bottled water.

C．Coffee. D．Milk.

A　解析：细节理解题。根据第四段最后一句可知，瓶装水的销量仅次于啤酒和苏打水，也就是说啤酒在美国卖得最好。

4．Which of the following statements about the U．S. is TRUE?

A．More than $100 billion is spent every year on bottled water in the U．S.

B．About 79 billion water bottles a year are gone through by the U．S. public.

C．In Chicago, you have to pay 5 cents as tax if you buy a bottle of water.

D．An American drinks 50 liters of bottled water every year on average.

C　解析：推理判断题。根据第三段第一句可排除A项；根据第一段的内容可排除B项；根据最后一段第一句中的"Chicago, which added a five­cent tax on each bottle"可知C项正确；根据第四段第二句可排除D项。

　　If teaching English is what you love，you will enjoy teaching the language as a volunteer in India.As an English teacher，you will enjoy working in partner institutions and on independent projects.Welcome to join our program!

　　You will find students who are eager to learn，and learners who are excited to be taught by foreigners and in a good learning environment.The atmosphere is quite good，you will love it and it will be exciting for you to help the children improve their skills in English and your English teaching skills.

　　Most of the students are from Himalayan Mountains who do not have a sound knowledge of English.Here volunteers work with a specific aim and their work is to reach the desired goal.Most of the schools in the villages have a small number of students; therefore，you will not be exhausted as what happens in learning institutions with higher numbers of learners.The numbers are manageable and again the students are eager to learn.They appreciate being taught by native English speakers，because they can learn the language in an original setting unlike in their rural(乡村的) setting where it is influenced by the local accents.

You do not have to be a teacher to volunteer in this program，given that it is only an attempt to give the children a different view of the language.One is not required to offer an in­depth knowledge of English grammar；all that is needed is that you are a native speaker and willing to