英语课本整理M.docx

 PAGE \* MERGEFORMAT 31 Unit 2 The environment In this unit, you will read a debate and two articles on the environment listen to a news report and information about desertification discuss protecting the environment design a poster write a report about- protecting the environment Welcome to the unit A healthy environment is important for our survival. Look at these pictures and discuss the questions below with a partner. An earthquake Air pollution An erupting volcano Rubbish Look at the pictures above. Which of these problems are caused by nature and which are caused by man? Can you think of other natural disasters that damage the environment? Can you think of other ways in which people damage the environment? Of all the problems highlighted in the sepictures, earthquakes and volcanic eruptions can be caused by nature.Human beings can almost do nothing to prevent such natural disasters from happening. The other two pictures show problems caused by man. This highlights the fact that man plays an important role in damaging the environment. The good news, however, is that there is a lot we can do to prevent this kind of environmental damage. Sandstorms and tsunamis are other natural disasters that damage the environment. When a sandstorm happens, strong winds blow sand or dust, which may do much damage to the environment and our health, from one place to another over a long distance. The tsunami that ravaged south-east Asian countries in December 2004 proved just how destructive natural disasters can be. Thousands of people died while thousands more were left homeless. People who work in agriculture can damage the environment without even realizing it. For example, fertilizers and pesticides are often used to stimulate the growth of crops and to kill insects. However, when these chemical substances are discharged into rivers and lakes, plants and animals are often killed. In some areas where the river is polluted because of thes