2. Nonstop waves of immigrants played a role, too and so did bigger crops of babies as yesterday's "baby boom" generation reached its child-bearing years.

3. Much as I have traveled, I have never seen anyone to equal her in thoroughness, whatever the job.

4. Odd though it sounds, cosmic inflation is a scientifically plausible consequence of some respected ideas in elementary-particle physics, and some astrophysicists have been convinced for the better part of a decade that it is true.

5. Only when you have acquired a good knowledge of grammar can you write correctly.

6. Nowhere do 1980 census statistics dramatize more the American search for spacious living than in the Far West.

7. In no country other than Britain, it has been said, can one experience four seasons in the course of a single day.

8. We have been told that under no circumstances may we use the telephone in the office for personal affairs.

9. Not since Americans crossed the continent in covered wagons have they exercised and dieted as vigorously as they are doing today.

10. Not until these fundamental subjects were sufficiently advanced was it possible to solve the main problems of flight mechanics.

11. Little did we expect that he would fulfil his task so rapidly.

12. Hardly had he begun to speak when the audience interrupted him.

13. This means that no sooner has he got used to one routine than he has to change to another, so that much of his time is spent neither working nor sleeping very efficiently.

14. Not only did white men encroach upon the Indians' hunting grounds, but they rapidly destroyed the Indians' principal means of existence--the buffalo.

15. So great was the honour that the winner of the foot race gave his name to the year of his victory.

16. To such lengths did she go in rehearsal that two actors walked out.

17. In this class are ads that suggest that the product will satisfy some basic human desires.

18. Emerging from the 1980 census is the picture of a nation developing more and more regional competition, ad population growth in the Northeast and Midwest reaches a near standstill.

19. Coupled with the growing quantity of information is the development of technologies which enable the storage and delivery of more information with greater speed to more locations than has ever been possible before.

20. "Important information can get buried in a sea of trivialities", says a law professor at Cornell Law School who helped draft the new guidelines.

21. How their results compared with modern standards, we unfortunately have no means of telling.

22. The inner workings of our own brains we feel to be uniquely worthy of investigation, but custom, we have a way of thinking, is behavior at its most commonplace.

23. The American baby boom after the war made unconvincing U.S. advice to poor countries that they restrain their births.

24. Certain it is that all essential processes of plant growth and development occur in water.

25. We really should not resent being called paupers. Paupers we are, and paupers we shall remain.

26. The nobler and more perfect a thing is, the later and slower it is in arriving at maturity.

27. This is the world out of which grows the hope, for the first time in history, of a society where there will be freedom from want and freedom from fear.

28. Today the main economic activities of the family are in the nature of consumption--however productive may be what some of its members do in society.

29. Of the intrinsic differences that separate American from English the chief have their roots in the obvious disparity between the environment and traditions of the American people since the seventeenth century and those of the English.

30. Especially was this importance impressed on me when I realized how much Hollywood was involved in exporting American life to the world, and how much Broadway with all its thertres meant to the modern drama.

31. Lost in the wuphoria of success is any thought that--in another place, at another time--it may well be naval air power without the support of any land-based air power that carries the day.

32. Underlying much of the desire for change, too, was the feeling of many of the world's newly independent states that they had never had a part in framing traditional doctrine.

33. Not only was man now able to see with measured precision independently of visibility, but he could now "see" such objects as aircraft at ranges far in excess of those possible even under ideal optical conditions with normal vision.

34. Forgotten is any idea that naval air power is not power unto itself, but part and parcel of naval power--trained, supported, operated, and commanded by people well-versed in the intricacies of war at sea and war from the sea.

35. This I propose to offer, pledging that the larger purposes will bind upon us all as a sacred obligation with a unity of duty hitherto evoked only in time of armed strife.

36. These measures, or such other measures as the Congress may build out of its experience and wisdom, I shall seek, within my constitutional authority, to bring to speedy adoption.

37. Slap-slap-slap-slap... Around and around a submariner goes, the soft-soled shoes beating a rhythm on the hard, shiny floor in a Trident submarine. People on shore might grasp the instant irony of a man jogging to prolong his life around weapons capable of destroying two hundred cities.

38. Friends who are near to me I know well, because through the months and years they reveal themselves to me in all their phases; but of casual friends I have only an in complete impression, an impression gained from a handclasp, spoken words.

39. Closely related with this is the capacity to be tolerant--not, indeed, of what is wrong, but of the frailty and imaturity of human nature which induce people, and again especially children, to make mistakes.

40. According to Newton's first law of motion a body is in motion but actually never is there a body which will remain in motion forever because it is impossible to get rid of external influence.

41. Added to that difficulty is the need for the media, for economic and journalistic reasons, to present a controversial perspective, which is not usually as objective as we might wish.

42. Only now that I've struggled to find patience in myself when Matthew insists he help me paint the house or saw down dead trees in the back yard am I able to see that day through my father's eyes.

43. This process, difficult and complex as it is, is simple compared to the job of discovering that new kinds of corn could be developed, or to the job of discovering how to develop them.

44. Among the advantages that future biochips, or "living computers", would have over conventional semiconductor chips are that they are smaller, they do not generate as much heat, and they allow for the parallel processing of information, making them faster than today's semiconductor devices.

45. Into this area of industry came millions of Europeans who made of it what became known as the "melting pot", the fusion of people from many nations into Americans.

46. Neither would it prevent cruise missiles or bombers whose flights are within the Earth's atmosphere, from hitting their targets.

47. From each of them [books] goes out its own voice, as inaudible as the streams of sound conveyed by electric waves beyond the range of our hearing, and just as the touch of a button on our stereo will fill the room with music, so by opening one of these volumes, one can call into range a voice far distant in time and space, and hear it speaking, mind to mind, heart to heart.

48. His students might feel inclined to counter these with the words: "The more I learn, the less I know."

49. In the motorized wheelchair, a boyish face dimly illuminated by a glowing computer screen attached to the left armrest is Stephen Willia Hawking, 46, one of the world's greatest theoretical physicists.

50. Rather than a particular method, the success of science has more to do with an arttitude common to scientists.

51. Of primary interest in business and technical research reports is the validity of the results as the bases for company decisions.

52. He wrote operas, and no sooner did he have the synopsis of a story but he would invite--or rather summon--a crowd of his friends to his house and read it aloud to them.

53. Not only did he seem incapable of supporting himself, but it never occurred to him that he was under any obligation to do so.

54. I might have been incredulous had I not been accustomed to such response, for long ago I became convinced that the seeing see little.

55. Then, down the crowded thoroughfare comes the University of Cambridge's most distinctive vehicle, bearing its most distinguished citizen.

56. A nice example is that dreaded polar ice cap, which some scientists say isn't starting to melt at all but instead will shortly begin to enlarge rapidly, giving birth to a new ice age that soon will cover the entire United States.

57. Were it not for the feather lost in departure, no one would have known that the white bird had ever been.

58. Sir Isaac Newton was one of the pioneers in investigating viscosity, and on his analysis depends the definition of the coefficient.

59. A widely known achievement of radio electronics is an electronic calculating machine that can perform several thousand arithmetical operations in one second.