Water problems in the future will become nore intense and more complex. Our increasing population will tremendously increase urban wastes,primarily sewage. On the other hand, increasing demands for water will decease substantialy the amount of water available for diluting wastes. Rapidly expanding industries which involve more and more complex chemical processes will produce large volumes of liquid wastes, and many of these will contain chemicals which are noxious. To feed our rapidly expanding population, agriculture will have to be intensified. This will involve ever-increasingquantities of agricultural chemicals, From this , it is apparent that drastic steps must be taken immediately to develop corrective measures for the pollution problem.
There are two ways by which this pollution problem can be dwindled. The first relates to the treatment of wastes to decrease their pollution hazard. This involves the processing of solid wastes prior to disposal and the treatment of liquid wastes, or efflunets,to permit the reuse of the water or minimize pollution upon final disposal.
A second approach is to develop an economic use for all or a part of the wastes. Farm manure is spread in fields as a nutrient or organic supplement . Effluents from sewage disposal plants are used in some areas both for irrigation and for the nutrients contained. Efflunets from other processing plants may also be used as a supplemental source of water. Many industries, such as meat and poultry processing plants, are currently converting former waste products into marketable byproducts. Other industries are potential eonomic uses for waste products.
1.The purpose of this passage is ______.
a.to alert the reader to the dwindling water supply
b.to explain industrial uses of water
c.to acquaint the reader with water pollution problems
d.to demostrate various measures to solve the pollution problem
2.Which of the following points is NOT INCLUDED in the passage?
a.In dustrial development incudes the simplification of complex chemical processes.
b.Diluting wastes needs certain amount of water
c.Demands for water will go up along with the expanding population
d.Intensive cultivation of land requires more and more chemicals
3.The reader can conclued that________.
a.countries of the world will work together on polution problems
b.byproducts from wastes lead to a more prosperous marketplace
c.science is making great progress on increasing water supplies
d.some industries are now ,aking economic use of wastes
4.The author gives substance to the passage through the use of _______.
a.interviews with authorities in the field of water controls
b.opinions and personal observations
c.definitions which clarify important terms
d.strong arguments and persuasions
5.The words prior to probably mean______.
a.after
b.during
c.before
d.beyond
答案:cadbc
上一篇: 英语四级改革模拟题
下一篇: 英语四级阅读理解冲刺练习题合集
体坛英语资讯:China leads at curling world championship
体坛英语资讯:Maradona slams talk of Argentine coaching team spat
体坛英语资讯:Macheda last-gasp winner sends Manchester Utd back top
体坛英语资讯:Djokovic enters quarterfinals, Kuznetsova makes semi in Miami tennis
体坛英语资讯:Robinho cleared of rape charges
体坛英语资讯:Teenager Azarenka beats Serena to win Miami WTA title
体坛英语资讯:Venezuelan Valero contends title with Colombian Pitalua
体坛英语资讯:Bayern, Wolfsburg narrow gap with Bundesliga leaders Berlin
体坛英语资讯:Aguero commits future to Atletico Madrid
体坛英语资讯:Federer loses to Djokovic in Miami ATP tennis semi
体坛英语资讯:Injured Iverson to miss remainder of NBA season
体坛英语资讯:Serena wins WTA Player of the Year award
体坛英语资讯:Robinho forgives Pele
体坛英语资讯:Lakers star Kobe sued by housekeeper
体坛英语资讯:Ballesteros offers thanks for his cancer recovery
体坛英语资讯:Piturca sacked as Romanias national soccer team coach
体坛英语资讯:Mourinho under fire for latest outburst
体坛英语资讯:Injured Kaka stays behind in Brazil to recuperate
体坛英语资讯:Barcelona, Real Madrid both win again in Spains Primera Liga
体坛英语资讯:Nadal, Murray make fourth round at Miami tennis
体坛英语资讯:Robles plans 110m hurdles record at Czech Golden Spike again
体坛英语资讯:Los Angeles Angles pitcher killed in car crash
体坛英语资讯:Bayern crush Frankfurt, Wolfsburg remain top
体坛英语资讯:Federer wins sportsmanship award for 5th year
体坛英语资讯:Australias rugby player Mackay succumbs in hospital
体坛英语资讯:Jordon heads Naismith Memorial Basketball Hall of fame, 2009
体坛英语资讯:Zheng focuses on results, not rankings
体坛英语资讯:China wins four titles in Diving World Series
体坛英语资讯:S. Williams upset in opening round of Andalucia Tennis Championships
体坛英语资讯:Messi denies he is the leader of Argentine national team