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17．

Good news for kids in Nanjing!You can see the world's biggest solar-powered（太陽能的） plane named Solar Impulse 2 （SI2）．How different from other planes it is-without a drop of oil!Its power comes from the light of the sun．
Early this March，it started its five-month world trip．In total，the plane will travel 35，000kilometers and cross the whole world．Two pilots are driving the plane．The team hopes to improve green energy around the world．
On March 22^nd，the plane landed in Nanjing．It stayed there for one month．The stop in China is very important，because China is a big market for green energy technology．To welcome SI2，Nanjing Lukou International Airport built a special garage （飛機庫） for it．
The plane's wings are the largest in the world，but the plane weighs only the same as a family car．There are 17，000solar cells （太陽能電池） in the wings，they can provide energy for the flying．During the day，the solar cells change solar power into electricity （電） and make the plane fly all day and all night．
It is not the first solar plane，however，it is the first plane that is able to cross the whole world．

46．The news is aboutB．
A．solar power
B．a solar-powered plane
C．a train
D．sunlight
47．The trip will last forB．
A．one year
B．five months
C．five years
D．one month
48．SI2stopped in China becauseC．
A．Nanjing has built a garage for it
B．China welcomes it
C．China is a big market for the technology
D．Chinese kids like it
49．Flying all day and all night mainly depends onD．
A．its wings
B．the pilots
C．the oil
D．its solar cells
50．This passage may be taken from aC．
A．storybook
B．notebook
C．science newspaper
D．travel guide．

分析短文介紹了世界上最大的太陽能飛機，它的名字是SI2.3月22日，它降落在了南京，并將在此待一個月．

解答 46．B　推理判斷題　根據短文大意可知，短文介紹了世界上最大的太陽能飛機，所以這是一篇關于太陽能飛機的新聞，答案為B
47．B　細節理解題　根據"Early this March，it started its five-month world trip"可知，此次世界之旅將要持續五個月，故答案為B
48．C　細節理解題　根據"The stop in China is very important，because China is a big market for green energy technology"可知，它來中國是因為中國是一個綠色能源技術的大市場，故答案為C
49．D　細節理解題　根據"During the day，the solar cells change solar power into electricity （電） and make the plane fly all day and all night"可知，飛機日夜飛行是依靠太陽能電池儲存電量，故答案為D
50．C　推理判斷題　根據短文大意可知，短文介紹了太陽能飛機以及它的技術原理，屬于科學．所以這篇短文應該來自科學報紙，答案為C

點評做這道題時要先通讀全文，弄清短文大意，然后根據相關句子選出正確答案，最后仔細檢查．

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