新视野大学英语视听说教程第3册听力练习录音文本和答案Unit7.pdf

新视野大学英语视听说教程第三册 听力练习录音文本和答案 Unit 7 11. Basic Listening Practice 12. Script M : Now we have satellite and high-powered microscope, its eas to think we know ever thing about the world; but we still dont understand El Nino. W : Right. Scientists all over the world over are even uncertain about the cause of the warm Pacific current that brings storms or drought一the m sterious El Nino. Q: Which of the following is true according to the conversation? 2. Script M : Ever one is talking about environmental problem : acid rain, the greenhouse effect, holes in the ozone la er. We should think positivel . What can we do to improve things? W : I agree. We could do a lot more to harness the suns energ for heating and lighting in our homes. In Japan 43,000 solar roofs were installed in 2002. Q: How do the man and the woman view the environment? 3. Script W : We lived in Beijing some ears ago. It was alwa s difficult to keep the house clean with wind from the north blowing sand from the desert at us. M : Thafs wh the Chinese government has been encouraging people to plant trees along the edges of the Gobi Desert. Now those trees act as wind barriers. Q: What did the government encourage people to do? 4. Script M : Man old refrigerators and cars are environmental hazards because the contain CFCs that destro the ozone la er. W : Yes, but government or organizations are helping people to safel dispose of old refrigerators or, in the case of cars, to upgrade their air conditioning. Q: What are government departments helping people to do? 5. Script M : He , thafs an aerosol spra oure using on our hair! Build a bomb or set fire to the apartment to kill us quickl instead of making holes in the ozone, so we die of cancer. W : Cool it, man. This spra doesnt conta