Considered as a continuous body of fluid, the atmosphere is another kind of ocean. Yet, in 11 of the total amount of rain and snow on land areas in the course of a year, one of the most 12 facts is the very small amount of water in the atmosphere at any given 13 . The volume of the lower seven miles of the atmosphere the realm of weather events is 14 four times the volume of the worlds oceans. But the atmosphere 15 very little water. It is chiefly in the form of 16 vapor, some of which is carried over land by air currents. If all vapor 17 fell, it would form a layer only about one inch thick. A heavy rainstorm on a given area may use up only a small percentage of the water from the air mass that passes over.
How, then, can some land areas receive more than 400 inches of rain per year? How can several inches of rain fall during a single storm in a few minutes or hours? The answer is that rain-yielding air masses are in 18 , and as the driving air mass moves on, new mist air takes its place.
The basic source of most water vapor is the ocean. Evaporation, vapor transport, and rainfall make up the 19 movement of water from ocean to atmosphere to land and back to the sea. Rivers return water to the sea. In an underground area of the cycle, flowing bodies of water 20 some water directly into rivers and some directly to the sea.
A. contains B. view C. discard D. movement
E. time F. amazing G. continuous H. roughly
I. amusing J. motion K. rudely L. vision
M. invisible N. suddenly O. discharge
II. B 12. F 13. E 14. H 15. A 16. M 17. N 18. J 19. G 20. O
考研作文的用兵之道
考研优美英语作文的背诵006
考研优美英语作文的背诵043
考研优美英语作文的背诵032
考研优美英语作文的背诵034
考研优美英语作文的背诵041
2014考研英语写高分英语小作文
考研优美英语作文的背诵057
洞悉考研英语作文潜规则投其所好2
考研作文观点要走主流路线
考研优美英语作文的背诵049
考研英语短文写作题型分类与历年真题详析
考研优美英语作文的背诵058
名师辅导2014考研英语大作文五大命题规律
考研优美英语作文的背诵036
2014考研英语攻略之六大作文
考研优美英语作文的背诵055
考研英语应用文写作怎样拿高分
考研优美英语作文的背诵044
2014考研英语写作的最常用词汇总结
考研英语作文话题社会问题探讨
洞悉考研英语作文潜规则投其所好1
2014考研英语作文复习要趁早多积累
考研优美英语作文的背诵045
经验谈英语作文动笔之前先读听说
优美英语作文背诵005
四大妙招帮你扫除历史学记忆烦恼
考研优美英语作文的背诵015
考研优美英语作文的背诵031
考研优美英语作文的背诵047
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |