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 like 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 Master's degree holders. Too often, promising PH.D.Candidates, confronting the cost and financial sacrifice of pursuing their education, find the attraction of industry irresistible.(1)The U.S. will come to lose its leading place in technology probably because（）.A.the number of PH.D.Degree holders is decliningB.the number of scientists and engineers is decreasingC.the number of 22-year-ilds is decliningD.scientists and engineers are not employed(2)The field of science and engineering is facing a competition from（） .A.technologyB.foreign nationalsC.such fields as law, medicine and businessD.postgraduates(3)Large-scale enterprises now need （）.A.bright graduates and postgraduatesB.new inventionsC.advanced technologyD.engineers(4) Many promising postgraduates are unwilling to pursue a PH.D.degree because（）.A.they are not encouraged to be engaged in scienceB.industry does not require PH.D.holdersC.they have financial difficultiesD.they will spend much time and energy completing PH.D.(5) PH.D.candidates "find the attraction of industry irresistible" means that（）.A.they find industry is attracting more and more college studentsB.they don't think they can prevent themselves from working for industryC.they cannot resist any attraction from all sidesD.they cannot work for industry any longer