12．President Barack Obama rode a bicycle at the White House Science Fair on April 22．But it wasn't an ordinary bike．As he pedaled，the President stayed in place，while the energy from his pedaling powered a water filtration （過濾） system．He was testing an invention created by a team of 14students from Northeast High School，in Oakland Park，F(xiàn)lorida．
Payton Karr，16，and Kiona Elliot，18，attended the fair as representatives of the project．"We were hoping President Obama would ride the bike，but we didn't actually expect him to，"Payton told TFK．"It really meant a lot．"Kiona agreed．"It was pretty awesome to see the invention，which was invented by a group of 14high school students and one teacher，along with the help of community members，got the interest of the leader of our nation，"she said．
The project was an idea that came about after one of the Northeast students，Kalie Hoke，visited Haiti after the terrible 2010earthquake and saw how difficult it was to find clean water．The students invented a portable（便攜的），bicycle-powered emergency water filtration system，which can provide 20-30people with drinking water in a 15-hour period．The teens hope their invention will one day be used by relief organizations like the Red Cross．"They can take it to places after natural disasters so that water can be clean for the people there，"said Payton．
Payton and Kiona were among the 100students from more than 40states invited to the third annual White House Science Fair，in Washington，D．C．，which is also attended by leaders in science and education．President Obama started the event in 2010to  stimulate  students interested in STEM （Science，Technology，Engineering，Maths）．"Well，if you're a young person and you produce the best experiment or design，you ought to be recognized for that achievement，"Obama said when he first announced the fair．
President Obama praised the projects during a speech to attendees after the fair．"The science fair projects of today could become the products and businesses of tomorrow，"he said．"If you're inventing things in the third grade，what are you going to do by the time you get to college？"

36．What is special about the bicycle President Obama rode？C
A．It can move very fast．
B．It is extremely beautiful．
C．It is used to make water clean．
D．It is made of eco-friendly materials．
37．The representatives of the bicycle-powered water filtration systemD．
A．were both community members
B．graduated from a famous university
C．finished the project with the help of their parents
D．were surprised that their invention interested Obama
38．The bicycle-powered water filtration system was designedD．
A．a(chǎn)t the request of the Red Cross
B．for city families to get pure water
C．during the terrible 2010earthquake in Haiti
D．to provide people in disaster areas with clean water
39．The underlined word"stimulate"in Paragraph 4can be replaced byB．
A．help       B．inspire        C．change        D．entertain
40．We can know from the last sentence in the passage that President ObamaD．
A．wanted the youth to have big dreams
B．encouraged the youth to go to college
C．worried the young inventors would do nothing in college
D．believed the young inventors would have a promising future．

分析 奧巴馬總統(tǒng)在白宮試驗(yàn)了一種以騎自行車為動(dòng)力的水源凈化裝置，而該裝置的發(fā)明人竟是還在上學(xué)的一群孩子．在經(jīng)歷了2010年的一場(chǎng)地震后，他們想要像紅十字會(huì)一樣幫助別人，于是設(shè)計(jì)發(fā)明了這個(gè)裝置．

解答 36．C 細(xì)節(jié)理解題．由"As hepedaled，the President stayed in place，while the energy from his pedalingpowered a water filtration （過濾） system．（總統(tǒng)親自蹬自行車試驗(yàn)通過蹬自行車產(chǎn)生的能量可以用來給過濾水的系統(tǒng)充電．）"可知，該裝置是用來凈化水的． 故選C．
37．D 細(xì)節(jié)理解題．由""It waspretty awesome to see the invention，which was invented by a group of 14 highschool students and one teacher，along with the help of community members，gotthe interest of the leader of our nation，"she said．"可知，當(dāng)他們獲知自己代表小組去白宮時(shí)感到很吃驚．故選D．
38．D 細(xì)節(jié)理解題．由"They cantake it to places after natural disasters so that water can be clean for thepeople there"可知該裝置的目的是為了給災(zāi)區(qū)的人提供潔凈的水．故選D．
39．B 詞義猜測(cè)題．help幫助；inspire鼓勵(lì)；change改變；entertain娛樂．由文章可知奧巴馬總統(tǒng)是在鼓勵(lì)同學(xué)們．故選B．
40．D 推理判斷題．奧巴馬總統(tǒng)認(rèn)為人們的一點(diǎn)小的發(fā)明創(chuàng)意也許就會(huì)變成大產(chǎn)業(yè)，所以他相信年輕的創(chuàng)業(yè)者會(huì)有美好的前途．故選D．

點(diǎn)評(píng) 本文是新聞報(bào)道類閱讀，主要考查細(xì)節(jié)理解題和推理判斷題．在做細(xì)節(jié)理解題時(shí)，首先根據(jù)題目要求迅速在文章里找出相應(yīng)的段落、句子或短語．認(rèn)真比較選項(xiàng)和文中細(xì)節(jié)的區(qū)別，在做推理判斷題時(shí)不要以個(gè)人的主觀想象代替文章的事實(shí)，要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷．

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