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第6部分：完形填空（第51～55题，每题1分，共15分）
下面的短文有15处空白，请根据短文内容为每处空白确定一个最佳选项。
New Ideas
Icelands President Olafur Grimsson is trying to drive carbon dioxide （二氧化碳） underground to （51） its release into the air.
Over the next two years， a team of scientists will try to （52） carbon dioxide-charged water into the rock underground. Scientists say this should work. The CO2 will react with the rock to form a stable mineral that remains in the （53） for millions of years.
If the experiment succeeds， Iceland could give the world a new （54） to reduce emissions.
Sigurdur Gislason， a university professor in Iceland， says his country has an （55） over other countries： We have enormous amounts of clean （56） and a small society. You can do experiments here that you cant do anywhere else.
In an attempt to cut back on the use of air conditioners during summer， the Japanese government in 2005 （57） a campaign to keep office temperatures at 28℃ in summer. Men were also encouraged to change business suits for （58） wear. in other words， no more ties.
The （59） is meant to show the governments resolve to achieve Japans target of reducing greenhouse （温室） gas emissions by 6 percent， said Chief Cabinet Secretary Hiroyuki Hosoda. The （60） has cut an estimated 79，000 tons of carbon dioxide gas emissions each year.
As the countrys 2005 Energy Policy Act （61） into force this year， more Americans will be encouraged to use （62） cars and energy sources.
According to the new law， those who buy hybrid （混合） cars such as the Toyota Prius can earn tax credits， or rebates （退款）， of （63） to $2，600 a year. Homemakers （主妇） can also save when they renovate， claiming tax rebates （64） around $500 simply by fitting their homes with energy-saving insulation （绝缘）。 If they （65） in solar water heating， the payoff at tax time is equal to 30 percent of the appliances cost or a maximum of $2，000.
51 A reduce B narrow C interrupt D interfere
52 A spread B splash C inject D flow
53 A air B rock C water D soil
54 A era B period C page D way
55 A merit B benefit C profit D advantage
56 A oil B energy C gas D solar-power
57 A mounted B called C opened D broke
58 A decent B formal C casual D fashionable
59 A pledge B move C promise D statement
60 A campaign B war C activity D assault
61 A makes B takes C bring D comes
62 A fast B cheap C expensive D environment-friendly
63 A under B up C on D from
64 A putting B worth C building D buying
65 A spend B give C invest D donate