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The amount of usable water has always been of great interest in the world. ___36___ springs and streams sometimes means control, particularly in the ___37___ areas like the desert. The control is possible even without possession of large areas of ___38___ land. In the early days of the American West, gun fights were not ___39___ for the water resources (资源). And laws had to be ___40___ to protect the water rights of the ___41___ and the use of the water resources accordingly.
42___ is known to us all, there is not ___43___ water in all places for everyone to use as much as he likes. Deciding on the ___44___ of water that will be used in any particular period
45___ careful planning, so that people can manage and use water more ___46___. Farmers have to change their use of or demand for water ___47___ the water supply forecast (预报).
The ___48___ water supply forecast is based more on the water from the ___49___ than from the below. Interest is ___50___ in the ways to increase rainfall by man-made methods, and to get water from the winter snow on mountain ___51___. With special equipment, some scientists are studying the ways in which the mountain snow can be ___52___, and with the help of a repeater station, they send the ___53___ data (数据) to the base station. The operator at the base station can get the data at any time by ___54___ a button. In the near future, the forecast and use of water ___55___ probably depend on the advance knowledge of snow on mountains, not of water underground.
36. A. Using B. Holding C. Owning D. Finding
37. A. dry B. distant C. deserted D. wild
38. A. fine B. beautiful C. rich D. farming
39. A. unlawful B. unacceptable C. unpopular D. uncommon
40. A. made B. designed C. signed D. written
41. A. winners B. settlers C. fighters D. supporters
42. A. That B. It C. What D. As
43. A. plentiful B. enough C. any D. much
44. A. type B. quality C. amount D. level
45. A. requests B. requires C. means D. suggests
46. A. effectively B. easily C. conveniently D. actively
47. A. leading to B. due to C. owing to D. according to
48. A. correct B. further C. average D. early
49. A. clouds B. sky C. air D. above
50. A. raising B. rising C. building D. lasting
51. A. rocks B. tips C. cops D. trees
52. A. taken care of B. made use of C. piled up D. saved up
53. A. picked B. produced C. used D. gathered
54. A. touching B. knocking C. pressing D. turning
55. A. might B. can C. will D. should
查看习题详情和答案>>The amount of money ______for the seriously sick child was soon collected.
A. to need B. needed C. needing D. which needed
查看习题详情和答案>>The amount of carbon taken in by growing plants increased from 1982 through 1999 as
temperatures rose and the amount of carbon dioxide in the atmosphere increased. But a new study
in Friday ’ s edition of the journal Science found a drought - related decline in such plant growth
from 2000 to 2009，even though temperatures continued to climb.
As drought caused by warming reduces the land ’ s ability to take in carbon，the result could
be more carbon dioxide left in the atmosphere，and thus more warming，Zhao Maosheng from the
University of Montana explained in a telephone interview.
“This is a pretty serious warning that warmer temperatures are not going to endlessly improve
plant growth ’” co - author Steven Running，also from the University of Montana ’ said in a
statement. “ We see this as a bit of a surprise，and potentially significant on a policy level because
previous interpretations suggested global warming might actually help plant growth around the
world, “ he said.
Instead, he and Zhao found a small but measurable decline of about 1%，compared to a 6%
increase in the past decade.
Their study，based on the data collected by NASA satellites，found that north areas continued
to increase plant growth，thanks to warmer temperatures and a longer growing season.
Someone commented, "This past decade’ s net decline in earthly productivity suggests that a
complex relationship between temperature, rainfall, cloudiness, and carbon dioxide, probably in
combination with other factors such as nutrients (营养）and land management，will determine
future patterns and trends in productivity.，，
From the first paragraph, we can learn in the recent decade or so.
the emission(排放)of carbon hasn’ t been reduced
draught has been causing loss of soil and water
carbon dioxide levels have been rising
the rise of temperature doesn' t promote the plant growth
Zhao Maosheng really worried that .
more and more land will be abandoned
the climate becomes warmer and warmer
the emission of carbon dioxide increases
draught further reduces the number of the plants
Steven Running made his statement to .
confirm Zhao' s views on the influence of temperature rise
urge the government to take necessary measures
warn the people to strengthen the plant protection
support Zhao* s views on lhe plant production
We can infer from the passage that .
global warming will determine the future productivity
various factors play a key role jointly on future productivity
earthly productivity actually increased in the past decade
temperature rise has had no effect on future producticity patterns
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