全新版大学英语4第二版听说教程unit2答案.pptVIP

全新版大学英语第二版听说教程4 Unit 2 pre-listening on P12 1. How harmful is smoking to smokers? Theres no denying the fact that smoking is very detrimental to ones health. It is estimated that there are 2.5 million people who die of smoking every year. Thus, it is not an exaggeration when people say that cigarettes are the first killer of human beings. Smoking may result in a lot of serious consequences. First, scientists have found that there exist a lot of dangerous chemical substances in cigarettes, which are contributing factors to various fatal diseases such as lung cancer and heart attacks. Second, smoking also has a negative influence on the health of people working with or staying near smokers. There are many smokers family members who are diagnosed with various respiratory diseases every year. Third, smoking often results in addictive behaviors on the part of smokers. Smokers tend to get chronically addicted to cigarettes and once they have developed this bad habit, it would be extremely hard for them to shake off the shackles of cigarettes. 3. Why do some young people pick up smoking? Young people are the hopes of our society. But unfortunately, there are many young smokers around us. The reasons are manifold. From my perspective, I think there are two important ones which contribute most to this phenomenon. Firstly, the young in our present society are those who undertake the heaviest pressures of work, of peers and of the society. They urgently need to give vent to their internal depressions, anxieties, etc. in the least inconvenient way. Thus, many turn to smoking as a way of unleashing their pressures. Second, some of the young are not mentally mature enough to withstand temptations and are susceptible to new and exciting things. Under such mentalities, or perhaps out of their curiosity, they just take up smoking or parody those coolsmokers around them subconsciously. Part B: Listening task Ex. 1 On P15: d c b a a Ex. 2 On P15 1. Non-smokers seem to