Question

3．Hundreds of years ago，life was harder than it is today．（68）C．There was no modern medicine，either．
Life today has brought new problems．One of the biggest is pollution．Water pollution has made our rivers and lakes dirty．（69）E．Noise pollution makes us talk louder and become angry more easily．Air pollution is the most serious kind of pollution to all living things in the world．Cars，planes and factories all pollute our air every day．Sometimes the polluted air is so thick that it is like a quilt （被状物） over a city．（70）B．
   Many countries are making rules to fight pollution．Factories must now clean their water before it is thrown away，and they mustn't let dirty smoke go into the air．
We need to do many other things．We can put waste things in the dustbin and do not throw them on the ground．（71）D．If there are fewer people driving，there will be less pollution．
（72）A．Every person must help to fight pollution．

A．Rules are not enough． B．This kind of quilt is called smog． C．People didn't have modern machines． D．We can go to work by bus with our friends in the same car． E．It kills our fish and pollutes our drinking water． F．Smog is also a kind of pollution．

Answer 1

分析 文章大意：这是一篇议论文．主要介绍环境污染的问题．今天的生活带来了新的问题，最大的是污染，如：水污染，噪声污染，还有空气污染，许多国家都制定规则打击污染．我们可以坐公共汽车去上班，也可以和我们的朋友开同一辆车上班．尽力减少污染，只有规则是不够的，每个人必须要帮助对抗污染．

解答 68．答案：C．选句题．根据上句Hundreds of years ago，life was harder than it is today．几百年前，生活比现在更艰难．可知，下句应该是"人们没有现代机器．"．选C．
69．答案：E．选句题．根据上句Water pollution has made our rivers and lakes dirty水污染使我们的河流和湖泊变得肮脏．可知，下句应该是"它杀死我们的鱼，污染我们的饮用水．"，选E．
70．答案：B．选句题．根据上句Sometimes the polluted air is so thick that it is like a quilt （被状物） over a city．有时被污染的空气如此之厚，就像一座城市的棉被．可知，应该是雾霾．下句填"这种被子叫做雾霾．"，选B．
71．答案：D．选句题．根据下句If there are fewer people driving，there will be less pollution．如果开车的人少一些，污染就会少一些．可知，上句应该是"我们可以和我们的朋友坐同一辆车去上班．"，选D．
72．答案：A．选句题．根据下句Every person must help to fight pollution．每个人都必须帮助打击污染．可知，上句应该是"规则是远远不够的"，选A．

点评 选句填空，要注重句子与句子之间、段落与段落之间逻辑关系以及对篇章的整体理解．结合语境，根据所给句子，选择合适的答案．