While scientists are worried that humans are causing higher temperatures on the Earth, a Maryland man, Ace, thinks we can save the world by spraying(噴射)huge amounts of water into the air.
Ace told the McClatchy News Service that at least 1,000 places should be chosen to spray water. The water would be sprayed between 20 and 200 feet into the air. Thousands of tons of seawater would be sprayed for years at a time.
The 1,000 sites would be picked after more studies. They would be mostly in the Northern Hemisphere(北半球). Ace says he would avoid tropical(熱帶的)areas of the globe. He says water turns to rain too quickly in these areas for his plan to work.
The water would be changed into vapor. That process requires heat. The water vapor would rise above the Earth. The water vapor would form clouds. The clouds would help in several ways. They would cool the Earth by reflecting sunlight. They would later turn into rains. The rains would provide another way of cooling the Earth.
Ace’s plan has gotten some support from a limited scientific study. Kenneth Caldeira is a climate scientist. He works at the Carnegie Institution’s Department of Global Ecology at Stanford University in California. Caldeira tested some of the Ace’s figures on a computer program. The computer model is used by top scientists to study global climate change. The model showed that the plan might work.
“More tests are planned in 2009. Ideas like Ace’s should be considered carefully and with an open mind,” Calderira said. “Every brilliant(卓越的)invention in the history of technology looked a little bit mad when first put forward.”
65.What’s the purpose of Ace’s plan?
A. To reduce air pollution.                      
B. To make summer cooler.
C. To offer dry areas more rain.                  
D. To solve the problem of global warming. 
66.According to Ace’s plan,___________.
A. planes would be used to spray water.       
B. it would be best to spray water on rainy days.
C. seawater would be sprayed high into the sky
D.1,000 sites in the Southern Hemisphere would be chosen.
67.Why wouldn’t Ace spray water in tropical areas?
A. Water is changed into vapor too quickly.      
B. Water turns to rain too quickly.
C. It is hard for vapor to form clouds.           
D. It is bad for local plants to have too much rain.
68. It seems that Caldeira ____________.
A. takes Ace’s plan seriously                 
B. thinks Ace’s idea too crazy
C. doesn’t believe the computer’s result        
D. agrees to carry out Ace’s plan right away

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語(yǔ) 來(lái)源: 題型:單選題

To enjoy the scenery, Irene would rather spend long hours on the train _____ travel by air.


  1. A.
    as
  2. B.
    to
  3. C.
    than
  4. D.
    while

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:

One day Daddy and I was going for a walk around the      1.     

lake while a girl rode past us quickly. Suddenly we heard    2.     

a cry for a help. The girl had fallen into the lake with her    3.      

bike. Daddy and I ran quickly towards her. We manage     4.       

to pull her out the water. Then the girl asked us if we could  5.       

help getting the bike out of the water. Then the girl asked    6.      

us if we could help get the bike out of the lake. Daddy was   7.      

only too ready to help him. When we pulled her bike out,   8.      

she rode away even with saying “ Thanks ” to us.       9.     

I felt quite disappointing at her deed.                    10.     

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:

The thought of going back home was     kept him happy while he was working abroad.

A.that           B.a(chǎn)ll that           C.a(chǎn)ll what           D.Which

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

We arrived in Spain for the first time a few weeks ago. I decided to   21   a car because we had sold the one we had in England before   22   home. Yesterday the sales office rang us to say the car was   23   . I had tried out a model like it before, but as I was not yet   24   driving in this city, my wife did not want me to collect it   25   so we went together to   26   it. We paid for the car and   27   the papers. They told us that there was   28   petrol(汽油)to take us to a garage, where we could fill up. The   29   garage to the office was about 100 yards away and we got there   30   . But when I turned into main road I suddenly saw a lot of cars racing   31   me. I got out of   32   as fast as I could by backing into the garage   33  and the man behind   34   me.

    “It’s such a problem to   35   to drive on the right side, isn’t it?” my wife said. “Yes, if only I had had a few lessons for   36   .” I replied. “You had better go   37   on the way home,” my wife said. “You’d be sorry if you had   38   on the first day, wouldn’t you?” While we were talking, the man behind got out of his car and said in good English,“ Would you mind telling me   39   you are thinking of leaving?   40   are you going to sit in your car all day?”

21. A. borrow              B. drive                C. buy                  D. choose

22. A. leaving              B. making             C. returning                 D. getting

23. A. right                         B. ready               C. fixed                D. sold

24. A. sure of               B. satisfied with       C. interested in          D. used to

25. A. on my own         B. right away               C. in a hurry                D. on the way

26. A. receive               B. bring                C. order                D. fetch

27. A. accepted             B. wrote               C. signed              D. copied

28. A. little                         B. enough            C. much               D. no

29. A. best                          B. nearest             C. quickest            D. cleanest

30. A. lately                        B. directly            C. safely               D. slowly

31. A. after                         B. with                 C. around             D. towards

32. A. their way           B. the garage                C. their sight                D. the car

33. A. at last                B. once more               C. as usual            D. as well

34. A. caught               B. cheered           C. shouted at                D. chatted with

35. A. prepare              B. continue          C. choose              D. remember

36. A. discussion          B. adventure                C. experiment              D. practice

37. A. carefully            B. smoothly                 C. quickly             D. differently

38. A. an error             B. a problem                C. as accident        D. a headache

39. A. when                 B. why                 C. how                        D. what

40. A. For                           B. Or                          C. But                         D. So

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

The income gap between China's rural and urban residents(居民) has continued to widen during the past few years in spite of rapidly rising rural incomes, Agricultural Minister Sun Zhengcai said here on Wednesday.

The income ratio(比率) between urban and rural residents was 3.28:1 in 2006, against 3.23:1 in 2003, said Sun in his report on the promotion of building a new countryside in 2007. Sun also said the net income of rural residents in different regions also varied widely. The income gap is only one of several problems in rural areas, according to Sun's report. While listing the achievements in rural areas in recent years, Sun believed that rural development still followed behind urban development.

"We have bigger pressure to ensure the supply of major agricultural products such as grain," he said. "China's urbanization(都市化) has been speeded up and more rural residents have gone to urban areas," he said.

"In this case, more agricultural producers become farm produce consumers, which created more pressure for supply," he said.

Another problem facing China's agricultural development is inadequate application of science and technology.

"Only 30 percent of scient ific and technological achievements have been applied to agricultural production, which is 40 percentage points lower than developed countries," he said.

Despite increased government spending in rural areas, the infrastructure(基礎(chǔ)下部組織) is still poor and easily hit by disasters.

According to Sun, the government spent 431.8 billion yuan ($59.15 billion) on agriculture, rural areas and farmers this year, an increase of 80.1 billion yuan over the previous year.

China set aside 11.38 billion yuan to promote a new rural cooperative medical care system and 27.98 billion yuan to support the new compulsory education mechanism in rural area to ensure that all citizens shared the fruits of China's reform and opening-up, Sun said.

68.Which of the following is TRUE according to the text?

A.Because of the rapidly rising rural incomes, the income gap between China's rural and urban residents will disappear this year.

B.The net income of rural residents in different regions is the same.

C.The government has taken measures to develop the economy in the rural areas.

D.Beca use of the rapidly rising rural incomes, the supply of major agricultural products is enough.

69.Can you infer the meaning of the underlined words in paragraph 5?

A.be made full use of B.be made little use of

C.be not made full use of D.be made good use of

70. How much is spent on agriculture, rural areas and farmers the previous year?

A.431.8 billion yuan B.511.9 billion yuan

C.351.7 billion yuan   D.80.1 billion yuan

71. Which is NOT the problem in rural areas?

A.The income gap   

B.The inadequate application of science and technology

C.The supply of major agricultural products

D.China's urbanization

查看答案和解析>>

同步練習(xí)冊(cè)答案