Officials say the islands of Tokelau in the South Pacific Ocean have become the world's first territory totally powered by the sun．The move is expected to save money and ease the environmental burden of depending on imported fossil fuels．
Tokelau's three main atolls(环状珊瑚岛)，or islands，now have enough solar capacity to meet all of their electricity needs．Until now．Tokelau has been 100％dependent on diesel (柴油) for producing electricity．That has burdened the country with heavy economic and environmental costs．
The three atolls of Tokelau are about halfway between New Zealand and Hawaii and are administered by New Zealand．
Each atoll received its own solar power grid (电网)system．New Zealand officials estimated the cost of the project to build the three solar grids at around seven million dollars．The last of the grids has been completed．
It is estimated that oil imports make up to 30％of national income in some parts of the Pacific．The move to solar power could save Tokelau about one million dollars a year．Tokelau will now be able to spend more on social programs to help its citizens．
Other South Pacific islands are attempting similar projects．The island nations of Samoa and Tuvalu are aiming to get all of their electricity from renewable sources by 2020．The Cook Islands plans to start moving to solar panels and wind turbines．And most houses in the South Pacific groups of islands will begin to use solar water heaters．
East Timor's government has promised that no households in the capital，Dili，would be using firewood for cooking by 2015．It also says 50％of the country's electricity will come from renewable sources by the end of the decade．
New Zealand Foreign Affairs Minister Murray McCully says the country will hold a Pacific energy summit in March this year．He said the meeting would build on the success of clean and affordable energy solutions for Tokelau，Tonga，and the Cook Islands．
71．According to the text， makes Tokelau develop renewable energy project．
A．the country's heavy economic and environmental burden
B．the country's abundant solar and wind sources
C．the country's excellent location in the Pacific
D．New Zealand's administration and strong support
72．We can know Tokelau used to spend about dollars on oil imports every year．
A．seven million B．one million
C．three million D．four million
73．What can we learn from the text?
A．Some houses in Tokelau still lack solar capacity．
B．Tokelau has partly depended on fuel electricity．
C．Tokelau doesn't use imported diesel to produce electricity now．
D．Not every atoll has its own solar power grid system in Tokelau．
74．All the island nations except will get all of their electricity from renewable sources by 2020．
A．Samoa B．Tuvalu C．Tokelau D．East Timor
75．The text is mainly about ．
A．Tokelau's solar power project
B．South Pacific islands’renewable energy project
C．Tokelau's social programme to help its citizens
D．the development of solar water heaters