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				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 （被狀物） 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．
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          分析 文章大意：這是一篇議論文．主要介紹環(huán)境污染的問(wèn)題．今天的生活帶來(lái)了新的問(wèn)題，最大的是污染，如：水污染，噪聲污染，還有空氣污染，許多國(guó)家都制定規(guī)則打擊污染．我們可以坐公共汽車去上班，也可以和我們的朋友開(kāi)同一輛車上班．盡力減少污染，只有規(guī)則是不夠的，每個(gè)人必須要幫助對(duì)抗污染．
          解答 68．答案：C．選句題．根據(jù)上句Hundreds of years ago，life was harder than it is today．幾百年前，生活比現(xiàn)在更艱難．可知，下句應(yīng)該是"人們沒(méi)有現(xiàn)代機(jī)器．"．選C．
          69．答案：E．選句題．根據(jù)上句Water pollution has made our rivers and lakes dirty水污染使我們的河流和湖泊變得骯臟．可知，下句應(yīng)該是"它殺死我們的魚(yú)，污染我們的飲用水．"，選E．
          70．答案：B．選句題．根據(jù)上句Sometimes the polluted air is so thick that it is like a quilt （被狀物） over a city．有時(shí)被污染的空氣如此之厚，就像一座城市的棉被．可知，應(yīng)該是霧霾．下句填"這種被子叫做霧霾．"，選B．
          71．答案：D．選句題．根據(jù)下句If there are fewer people driving，there will be less pollution．如果開(kāi)車的人少一些，污染就會(huì)少一些．可知，上句應(yīng)該是"我們可以和我們的朋友坐同一輛車去上班．"，選D．
          72．答案：A．選句題．根據(jù)下句Every person must help to fight pollution．每個(gè)人都必須幫助打擊污染．可知，上句應(yīng)該是"規(guī)則是遠(yuǎn)遠(yuǎn)不夠的"，選A．
          點(diǎn)評(píng) 選句填空，要注重句子與句子之間、段落與段落之間邏輯關(guān)系以及對(duì)篇章的整體理解．結(jié)合語(yǔ)境，根據(jù)所給句子，選擇合適的答案．
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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