A growing world population and the discoveries of science may 11 this pattern of distribution in the future. As men slowly learn to master diseases, control floods, prevent famines, and stop wars, fewer people die every year; and in 12 the population of the world is 13 increasing. In 1925 there were about 2,000 million people in the world; by the end of the century there may well be over 4,000 million.
When numbers rise the 14 mouths must be fed. New lands must be I bought under cultivation, or land already farmed made to 15 larger crops. In some areas the accessible land is largely so intensively 16 that it will be difficult to make it provide more food. In some areas the population is so dense that the land is parceled out in units too 17 to allow for much improvement in farming methods. Were a larger part of this farming population drawn off into industrial occupations, the land might be farmed much more productively by modern methods.
There is now a race for science, technology, and industry to keep the 18 of food rising faster than the number of people to be fed. New strains of crops are being developed which will thrive in 19 climates; irrigation and dry-farming methods bring poor lands under the plough, dams hold back the waters of great rivers to 20 water for the fields in all seasons and to provide electric power for new industries; industrial chemistry provides fertilizers to suit particular soils; aero planes spray crops to destroy insects and many plant diseases.
A. ensure B. violently C. alter D. harmful E. cultivated F. unique G. transplanted H. yield I. consequence J. output K. extra L. steadily M. tiny N. unfavorable O. produce
答案:
11. C 12. I 13. L 14. K 15. H 16. E 17. M 18. J 19. N 20. A
新目标九年级Unit 8 Period 1
新目标九年级 Unit 15 section a
新目标9年级 Unit 10 Section A
新目标九年级Unit 3语法(emmacao提供)
新人教版初三英语下学期 lesson65
新目标九年级Unit 3语法
新目标九年级 Unit 5 Section A
新人教版初三英语下学期 Lesson62
新目标九年级Unit 5-2
新目标九年级 Unit 11 Section A
新目标九年级 Unit 13 Rainy days make me sad
新目标九年级Unit 5语法总结
新目标9年级 Unit 10 Section B
新目标九年级 Unit 5 Section B
新目标九年 Unit 12 Section B
新目标九年级 unit 6 sectionA第一课时
新目标九年级 Unit 11 Reading
新目标九年级 Unit 7 Section A
新目标九年级Unit 11 Section B
新目标九年级 Unit 5 Section Grammer Focus
新目标9年级 Unit 9 Section B
新目标九年级Unit 6 Section B 第一课时
新目标九年级Unit 5 It must belong to Carla.
新目标九年级 Unit 8
新目标九年Passive voice
新目标9年级 Unit 9 Reading
新目标九年级 Unit 4 SectionB
新目标九年Unit 1-5复习a
新目标九年级unit 6 定语从句专练
新目标九年级Unit 3
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |