2013年6月六级阅读真题 2013年6月六级阅读答案

时间：2024-06-24 08:28:16 作者：恶作剧之吻

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求2013年12月英语六级答案

1. 答案：D) Their hard work has resulted in a big success.

2. 答案：B) Join a package tour to Mexico.

3. 答案：B) In case some problem should occur.

4. 答案：C) The man can try out the facilities before he becomes a member.

5. 答案：A) He is not fit to study science.

6. 答案：C) Pay for part of the picnic food.

7. 答案：A) A labor dispute at a bus company.

8. 答案：D) The payment for an order.

9. B) A hotel receptionist.

10. A) Appearance.

11. C) Offer the job to David Wallace.

12 C) He was admitted to university.

13. B) He became a professor of Mathematics.

14. D) Their work on very high frequency radio waves.

15. D) To teach at a university.

16. A They have become a headache to the community.

17. C To alert the deer.

18. B They would endanger domestic animals.

19. A She is a tourist guide.

20. C It was used by the family to hold dinner parties.

21. B It is very big, with only six slim legs.

22. D They are uncomfortable to sit in for long.

23. D It is the biggest crippler of young adults.

24. A Hurry up and live life.

25. B Adventurous.

26. Legislation

27. instruction

28. efficient

29. dropout

30. motivation

31. discipline

32. contend

33. in favor of

34. at their disposal

35. inferior to

36 enthusiasm

37 reward

38 determine

39 impact

40 additional

41 closely

42 consistent

43 suspending

44 affect

45 penalty

46. G

47. C

48. H

49. F

50. A

51. G

52. D

53. K

54. I

55. J

2013年6月英语六级快速阅读norman borlaug原文

Norman Borlaug, the plant breeder known as the Father of the Green Revolution, Our Daily Bread, portrays sympathetically one of the great figures of the 20th Century.

Borlaug’s life was one of extraordinary paradoxes: A child of the Iowa prairie during the Great Depression who grew up on a dirt-poor farm, attended a one-room school and flunked the university entrance exam but went on to become one of most renowned plant breeders in history – and went on to receive the Nobel Peace Prize for averting malnutrition, famine and the premature death of hundreds of millions. (That was at a time when the award meant more than political correctness.)

Borlaug introduced several revolutionary innovations. First, he and his colleagues laboriously crossbred thousands of wheat varieties from around the world to produce some new ones with resistance to rust, a destructive plant pest; this raised yields 20% to 40%.

Second, he crafted so-called dwarf wheat varieties, which were smaller than the old shoulder-high varieties that bent in the wind and touched the ground (thereby becoming unharvestable); the new waist or knee-high dwarfs stayed erect and held up huge loads of grain. The yields were boosted even further.

Third, he devised an ingenious technique called “shuttle breeding”– growing two successive plantings each year, instead of the usual one, in different regions of Mexico. The availability of two test generations of wheat each year cut by half the years required for breeding new varieties. Moreover, because the two regions possessed distinctly different climatic conditions, the resulting new early-maturing, rust-resistant varieties were broadly adapted to many latitudes, altitudes and soil types. This wide adaptability, which flew in the face of agricultural orthodoxy, proved invaluable, and Mexican wheat yields skyrocketed.

In his professional life, Borlaug, who died in 2009 at the age of 95, struggled against prodigious obstacles, including what he called the “constant pessimism and scare-mongering” of critics and skeptics who predicted that in spite of his efforts, mass starvation was inevitable and hundreds of millions would perish in Africa and Asia. His work resulted not only in the construction of high-yielding varieties of wheat but also in new agronomic and management practices that transformed the ability of Mexico, India, Pakistan, China, and parts of South America to feed their populations.

How successful were Borlaug’s efforts? From 1950 to 1992, the world’s grain output rose from 692 million tons produced on 1.70 billion acres of cropland to 1.9 billion tons on 1.73 billion acres of cropland — an extraordinary increase in yield per acre of more than 150 percent. India is an excellent case in point. In pre-Borlaug 1963, wheat grew there in sparse, irregular strands, was harvested by hand, and was susceptible to rust disease. The maximum yield was 800 lb per acre. By 1968, thanks to Borlaug’s varieties, the wheat grew densely packed, was resistant to rust, and the maximum yield had risen to 6000 lb per acre.

Without high-yield agriculture, either millions would have starved or increases in food output would have been realized only through drastic expansion of land under cultivation — with losses of pristine wilderness far greater than all the losses to urban, suburban and commercial expansion.

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