Unit4periodwarmingupreading课件（新人教选修6）.ppt

Unit 4;一、课文大意填空;二、根据课文内容，选择最佳答案 1 ． Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1977? _____;3．The author probably agrees that ________. A．actually global warming is good for man; 4．Which is NOT the effect of global warming? ______ A．The sea level will rise. B ．Severe storms, droughts, famines, the spread of di-seases, and destruction of species will happen. C．Crops will produce less. D．Plants will grow faster. 5．What is the main idea of the passage? _____;Dr Janice Foster;So how has this come about and does it matter？这种温;运用 用 come 及其构成短语的适当形式填空; There is no doubt that the earth is becoming warmer (see Graph 1) and that it is human activity that has caused this global warming rather than a random but natural phenomenon. 毫无疑问，地球正在变暖(见表 1)，但全球变暖是人为的，而不 是随意的自然现象。 2．There is no doubt that...;运用 完成句子; All scientists subscribe to the view that the increase in the earths temperature is due to the burning of fossil fuels like;运用 完成句子;The problem begins when we add huge quantities of;拓展 (1)a quantity of 大量的(后接谓语动词用单数) in quantity 在数量上；大量地 in large quantities 大量地;运用 用所给单词的适当形式填空;It means that more heat energy tends to be trapped in;拓展 tend to do sth.倾向做某事 tend to/towards sth.倾向于某事 tend (to) sb./sth.照顾某人/某物 运用 完成句子;6．go up 上升；增长；升起;运用 用上面所提供的短语的适当形式填空; They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dio-xide.;辨析 result in/result from;运用 用上面所提供的辨析短语的适当形式填空; On the other hand, there are those, like George Hambley, who are opposed to this view and believe that we should not worry about high levels of carbon dioxide in the air.;运用 完成句子;They predict that any warming will be mild with few;运用 完成句子; “...it will encourage a greater range of animals—all of which will make life for human beings better.” “……它还会 促进动物的生长——所有这些都能改善人类的生活。” 10．range;(2)v.排列；归类于；变化；延伸;运用 完成句子;Greenhouse gases continue to build up in