D
Access to electricity has always been limited for people living in Nuevo Saposoa, a remote village in Peru. However, things went from bad to worse in March 2015 ___1___ a flood damaged the power station in the area. The villagers were ___2___ to turn to kerosene(煤油) lamps, which are not only expensive but also ___3___ because of the poisonous matter they give off.
___4___,the researchers and students at the Universidad de Ingenieriay Tecnologia(UTEC)in Lima,Peru heard about their ___5___ situation and came up with a creative solution. They ___6___ a lamp that can be powered by plants and soil, both of which can be found ___7___ in the Amazonian rain-forests where the village is located. Called Plantaldmparas, the ___8___ draws energy from a plant growing in a wooden box and uses it to ___9___an LED bulb.
While that may sound complicated and even impossible, it is quite ___10___. The waste produced by plants undergoes oxidization(氧化作用)in the soil, which produces electrons(电子). The UTEC team placed electrodes(电极)inside the soil to ___11___ the energy and store it in the lamp's batteries for ___12___ use. The researchers say a single charge can light an LED bulb for two hours-enough ___13___ for people to get their evening chores done. The university ___14___ ten such lamps to Nuevo Saposoa in October 2015. So far, they have been a huge ___15___! Elmer Ramirez, UTEC's professor, believes the plant powered lamps could also help improve the lives of thousands of other ___16___ rainforest communities, 42%of which have no access to ___17___.
This is not the ___18___ time the students and professors of UTEC have come up with a(n)___19___ solution to a problem. In 2014, to deal with Peru's severe ___20___pollution they created a large advertising board that could be used as an air purifier(净化器)as well!
.答案:1-5 ADDAC 6-10 BDBAB 11-15 CDCAA 16-20 CBBAC
Access to electricity has always been limited for people living in Nuevo Saposoa, a remote village in Peru. However, things went from bad to worse in March 2015 ___1___ a flood damaged the power station in the area. The villagers were ___2___ to turn to kerosene(煤油) lamps, which are not only expensive but also ___3___ because of the poisonous matter they give off.
___4___,the researchers and students at the Universidad de Ingenieriay Tecnologia(UTEC)in Lima,Peru heard about their ___5___ situation and came up with a creative solution. They ___6___ a lamp that can be powered by plants and soil, both of which can be found ___7___ in the Amazonian rain-forests where the village is located. Called Plantaldmparas, the ___8___ draws energy from a plant growing in a wooden box and uses it to ___9___an LED bulb.
While that may sound complicated and even impossible, it is quite ___10___. The waste produced by plants undergoes oxidization(氧化作用)in the soil, which produces electrons(电子). The UTEC team placed electrodes(电极)inside the soil to ___11___ the energy and store it in the lamp's batteries for ___12___ use. The researchers say a single charge can light an LED bulb for two hours-enough ___13___ for people to get their evening chores done. The university ___14___ ten such lamps to Nuevo Saposoa in October 2015. So far, they have been a huge ___15___! Elmer Ramirez, UTEC's professor, believes the plant powered lamps could also help improve the lives of thousands of other ___16___ rainforest communities, 42%of which have no access to ___17___.
This is not the ___18___ time the students and professors of UTEC have come up with a(n)___19___ solution to a problem. In 2014, to deal with Peru's severe ___20___pollution they created a large advertising board that could be used as an air purifier(净化器)as well!
1. A. after | B.though | C.unless | D.until |
2.A.advised | B.taught | C.asked | D.forced |
3.A.disappointing | B.inconvenient | C.strange | D.dangerous |
4.A.Fortunately | B.Suddenly | C. Certainly | D.Usually |
5.A.real | B.embarrassing | C.bad | D.unstable |
6.A.bought | B.designed | C.discovered | D.repaired |
7.A.in detail | B.in time | C.in harmony | D.in abundance |
8.A.village | B.lamp | C.rainforest | D.soil |
9.A.light up | B.make up | C.give up | D.use up |
10.A.widespread | B.straightforward | C.well-known | D.labor-saving |
11.A.waste | B.save | C.produce | D.direct |
12. A.additional | B.free | C.regular | D.later |
13. A.energy | B.space | C.time | D.brightness |
14. A.distributed | B.sold | C.lent | D.returned |
15. A.success | B.challenge | C.change | D.surprise |
16. A.nearby | B.small | C.remote | D.ancient |
17. A.education | B.electricity | C.technology | D.entertainment |
18. A.best | B.first | C.accurate | D.normal |
19. A.clever | B.simple | C.temporary | D.immediate |
20. A.noise | B.water | C.air | D.vehicle |