C-|||-The world uses about a thousand million tons of water a day.Water is a human right and-|||-everyone should have their share. Yet more than 700 million people around the world have-|||-trouble getting clean,safe water.-|||-Treating(处理) wastewater is a good way to provide fresh water for us.And it also helps-|||-the environment by keeping waste out of rivers and oceans. 80% of wastewater around the world-|||-is not treated at all,and it is running into oceans. But now we have got the technology to treat-|||-and reuse the wastewater.-|||-While 75% of our planet is covered with water,only about 2%is fresh water-that comes-|||-from rivers,lakes,ice and snow.The rest,98 % of the water,is in seas and oceans.It is too-|||-salty to drink.Then desalination(海水淡化)businesses come in.More than 19,000 factories-|||-have been built around the world,mostly in coastal countries. They process (加工)more than-|||-92 million tons of water every day. But the technology needs a lot of energy.-|||-Scientists are working to create a less costly technology.They want to produce 20 times more-|||-clean water and make sure everyone has enough. But for now,the world still faces with not-|||-having enough water for everyone each day.-|||-)34.How many people have trouble in getting clean water around the world?-|||-A. Under 10 million. B.Only 19 million.-|||-C.About 92 million. D.Over 700 million.-|||-)35.Treating wastewater helps the environment by __-|||-A.storing waste in ice and snow B.letting waste run into oceans-|||-C.keeping waste out of rivers and oceans D.sending waste to coastal countries-|||-)36.At present,the technology to process water __-|||-A.needs much energy B.saves much money-|||-C.creates enough fresh water D.causes more pollution-|||-)37.What can we infer (推断)from the last paragraph?-|||-A.Water should be a human right. B.The water problem is still serious.-|||-C.Our planet is covered with water. D.Everyone has enough clean water.