will involve ever-increasing quantities 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 effluents,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 nutrientor organic supple nent. Effluent wage disposa plants are used in both for imigation and for the nutrients cont other processing plants may also be used as a supplemental so irce of Many industries,suc are currently conve ng products int tries are potential economic use for waste product 21.The purpos of this pas ng water supply ollution problem: 22 Which of the folloy s NOT INCLUDED in the a Industrial develon htasealiaonopabagwihtieepandng b Diluting wastes needs certain amount o Demands for water will go 23 The reader can conclude that a.countries of the world will work together on pollution problems b byproducts from wastes lead to a more prosnerous marketplace c.science is making great progress on increasing water supplies d.some industries are now asking economic use of wastes 24.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 strong arguments and persuasions 25.The v rds "prior to "(para.2)probably mear a after b.during c.before d.beyond Passage2 The United States is on the verge of losing its leading place in the world's technology.So says more than one study in recent years.One of the reasons for this decline is the parallel decline in the number ofU.S.scientists and engineers. Since 1976.employment of is.This trend is expectedt continue.However,the trend shows that the number of 22-year-olds--the near term source of future PH.D.s-is declining.Further adding to the problem is the increased competition for these candidates from other fields-law.medicine.business.etc.While the number of U.S.PH.Ds in science and engineering decline the award of PH.D.sto foreign nationals is increasing rapid Our inability to motivate students to pursue science and engineering careers at the graduate level is compounded because of the intense demand industry has for bright Bachelor's and will involve ever-increasing quantities 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 effluents, 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. Effluents 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 economic uses for waste products. 21.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 demonstrate various measures to solve the pollution problem 22.Which of the following points is NOT INCLUDED in the passage? a. Industrial development includes 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 23.The reader can conclude that________. a. countries of the world will work together on pollution 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 asking economic use of wastes 24.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 25.The words "prior to "(para.2) probably mean______. a. after b. during c. before d. beyond Passage 2 The United States is on the verge of losing its leading place in the world's technology. So says more than one study in recent years. One of the reasons for this decline is the parallel decline in the number of U.S. scientists and engineers. Since 1976,employment of scientists and engineers is up 85 percent. This trend is expected to continue. However, the trend shows that the number of 22-year-olds--the near term source of future PH.D.s-is declining. Further adding to the problem is the increased competition for these candidates from other fields-law, medicine, business, etc. While the number of U.S. PH.D.s in science and engineering declines, the award of PH.D.s to foreign nationals is increasing rapidly. Our inability to motivate students to pursue science and engineering careers at the graduate level is compounded because of the intense demand industry has for bright Bachelor's and