Greenhouse gases are byproducts of burning fossil fuels. Carbon dioxide,the most important gas of the greenhouse gases,is a gas produced when we burn fossil fuels. Human beings are burning more and more fossil fuels every day,which produces more and more carbon dioxide. When too much carbon dioxide is added into the atmosphere,more heat is trapped,causing the global temperature to go up. So,it is human activities that have caused global warming. No one knows for sure the effect of global warming. Some think it would be a catastrophe while others think it is a good thing. 请结合上述问题答案,用自己的话复述课文。
提示词:greenhouse gases,carbon dioxide,effect,catastrophe Ⅰ.写出下列必考单词
1.外部的adj.______________ 2.提倡,拥护,主张v.______________ 3.种类,范围n.______________ 4.图表n.______________ 5.普遍的,分布广的adj.______________ 6.平均的adj.______________ 7.环境,情况n.______________ 8.发动机n._______
9.承诺,信奉,交托n._______ 10.燃料n._______
11.温室,花房n._____ 12.资料,数据n.______ 13.大灾难 n.______
14.核的,原子核的adj._____ 答案:1.outer 2.advocate 3.range 4.graph
5.widespread 6.average 7.circumstance 8.motor 9.commitment 10.fuel 11.greenhouse 12.data
13.catastrophe 14.nuclear Ⅱ.写出下列单词的变化形式 1.消费,消耗v.________;消费者n.________ 2.新鲜的adj.________;使振作v.________ 3.趋向,照顾vi. & n. ________;倾向,趋势n.________
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