A Nepali teenager has designed a £23 solar panel(太陽能電池板)using human hair.
Milan Karki, who is 18 years old and lives in a village in rural Nepal, used human hair to replace silicon, which is a common but expensive material of solar panels.
By using hair as a replacement, Karki said that solar panels can be produced for around £23, aprice tag that could be halved if they were mass-produced.
The solar panel works because melanin, which gives hair black color, is light sensitive and can act as an electrical conductor.Karki was inspired to follow this route by a Stephen Kawking' s book, which explained how to create static (靜電的) energy from hair.
The device that Karki has showed and proved is able to produce 9V or 18W of energy—plenty to charge a mobile phone.
"Half a kilo of hair can be bought for only £16 in Nepal and lasts a few months, while a pack of batteries would cost £50 and last a few nights, " according to The Daily Mail.
Karki and his four classmates firstly made the solar panel as an experiment but the teens are convinced it has wide applicability and commercial viability (可行性).
Karki has now sent out several devices to other districts near his home for testing.He said, "First I wanted to provide electricity for my home, then my village.Now I am thinking for the whole world."
56.What is special about Karki's solar panel?
A.Karki' s solar panel has static energy.
B.Karki uses a very expensive material in his solar panel.
C.Karki puts man' s hair to use in his solar panel.
D.Karki uses his solar panel to charge the cell phone.
57.Karki' s idea about designing his solar panel results from __ .
A.his teacher's instruction
B.a(chǎn) book written by a famous physicist
C.his classmates' experiment
D.a(chǎn) report in The Daily Mail
58.Karki' s attitude to the application of his solar panel is .
A.optimistic B.uncertain C.serious D.negative
59.The text can probably be read in ______.
A.a(chǎn)n advertisement B.a(chǎn) text book C.a(chǎn) magazine D.a(chǎn) newspaper
科目:高中英語 來源:廣東省培正中學(xué)2011-2012學(xué)年高一上學(xué)期期中考試英語試題 題型:050
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科目:高中英語 來源: 題型:閱讀理解
A 13yearold American boy on Saturday became the youngest climber to conquer Mount Everest,the world’s highest mountain.
Jordan Romero from Big Bear,California,climbed up the 8,850 meter summit (峰頂) from the Tibetan side.On the same day,a Nepali (尼泊爾的) man,Apa Sherpa,broke his own world record of climbing Everest when he reached the summit for the twentieth time.Apa Sherpa’s team set off from Nepal’s capital,Kathmandu,last month,heading for the base camp (大本營) on the Chinese side of the mountain.
“The team has just called in and believe that they are standing on top of Mt.Everest,” Romero’s blog said.“Their dreams have now come true.Everyone is happy.”
The climbing has put Romero one step closer to reaching his goal of climbing the highest mountains on all seven continents (大洲).“It is just a goal,” Romero said.He had already climbed five peaks (高峰),and needs to climb only Vinson Massif,the highest peak in Antarctica,to hit his goal.
The youngest person before to climb Everest was 16yearold Temba Tsheri Sherpa of Nepal.Romero climbed together with a team including his father Paul and three local guides.He wanted to pick a small piece of rock from the top of the world and wear it in a necklace.
While Nepal insists that anyone planning to climb Mount Everest must be 16,China does not have any age restrictions (限制).Some mountain climbers haven’t agreed with the Romero family for letting him try it but his father said the climbing from the Chinese side is less dangerous.
68.Jordan Romero climbed up Mount Everest mainly to________.
A.meet Apa Sherpa B.build his body
C.break the world record D.realize part of his goal
69.To stand on the highest mountains on all seven continents,the next act of Jordan Romero is to climb the peak in________.
A.Asia B.Antarctica
C.Europe D.Africa
70.What would be the best title for the passage?
A.The great dream of picking rocks from top of Everest
B.California teen becomes youngest to climb Everest
C.The most number of successful Everest climbs
D.Mount Everest climbing becomes more popular
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科目:高中英語 來源: 題型:閱讀理解
A 13yearold American boy on Saturday became the youngest climber to conquer Mount Everest,the world’s highest mountain.
Jordan Romero from Big Bear,California,climbed up the 8,850 meter summit (峰頂) from the Tibetan side.On the same day,a Nepali (尼泊爾的) man,Apa Sherpa,broke his own world record of climbing Everest when he reached the summit for the twentieth time.Apa Sherpa’s team set off from Nepal’s capital,Kathmandu,last month,heading for the base camp (大本營) on the Chinese side of the mountain.
“The team has just called in and believe that they are standing on top of Mt.Everest,” Romero’s blog said.“Their dreams have now come true.Everyone is happy.”
The climbing has put Romero one step closer to reaching his goal of climbing the highest mountains on all seven continents (大洲).“It is just a goal,” Romero said.He had already climbed five peaks (高峰),and needs to climb only Vinson Massif,the highest peak in Antarctica,to hit his goal.
The youngest person before to climb Everest was 16yearold Temba Tsheri Sherpa of Nepal.Romero climbed together with a team including his father Paul and three local guides.He wanted to pick a small piece of rock from the top of the world and wear it in a necklace.
While Nepal insists that anyone planning to climb Mount Everest must be 16,China does not have any age restrictions (限制).Some mountain climbers haven’t agreed with the Romero family for letting him try it but his father said the climbing from the Chinese side is less dangerous.
58.Jordan Romero climbed up Mount Everest mainly to________.
A.meet Apa Sherpa B.build his body
C.break the world record D.realize part of his goal
59.To stand on the highest mountains on all seven continents,the next act of Jordan Romero is to climb the peak in________.
A.Asia B.Antarctica
C.Europe D.Africa
60.What would be the best title for the passage?
A.The great dream of picking rocks from top of Everest
B.California teen becomes youngest to climb Everest
C.The most number of successful Everest climbs
D.Mount Everest climbing becomes more popular
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科目:高中英語 來源:陜西省同步題 題型:閱讀理解
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科目:高中英語 來源:同步題 題型:閱讀理解
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