7.A team of scientists from University of Freiburg in Germany are developing a shoe with a sensor to automatically tie its laces(鞋帶)that could be taken off when users click their heels together.
It's been 26years since we saw them magically tightening Marty McFly's Nike boots in the film Back to The Future.
Now,self-tying shoelaces could actually become a reality this year,proving right one of the film's fantastical predictions for what 2015would be like.
Engineers have designed a shoe that can automatically lace up,adjusting itself to the shape of your foot.
Simply slip the controller on and pressure sensors will tell the‘smart shoe'when your foot is in position,triggering(觸發(fā))a tiny motor in the heel that pulls the laces tight.
When you want to take off the shoes,you click your heels together twice and the motor will release a spring(彈簧)in the shoe's tongue,which loosens the laces enough for you to slip them off.
And the invention doesn't even need to be plugged in to charge or have its battery  replaced because it runs on power generated by the swing of your foot as you walk•
Engineer K1evis Ylli,of the Institute for Micromachining and Information Technology in southern Gemany,said the shoes could help a variety of different people.
"One focus is that it could be used in shoes for elderly people who have mobility problems,"he said."But it could also work for children,or as a lifestyle product.".
The design,which is still in a prototype(雛形)stage,cleverly gets the energy of the foot's swing when opposing magnets in each shoe move past each other.It then uses that power to charge a battery.An hour of walking is enough to tighten the laces once,and it requires no energy to undo the shoes because that relies on the spring alone.

29.Which of the following can be the best title of the textC?
A.A fantastical prediction    
B.A great invention in Germany
C.A shoe with self-tying laces 
D.A popular lifestyle product
30.What can we learn about the shoesB?
A.They can automatically take off.
B.They can adjust themselves to your foot.
C.They need to be charged once.
D.They have been in design for 26years.
31.From the last paragraph we can knowD.
A.the shoes have been put into use
B.the shoes need power to take off
C.the shoes promise to be popular
D.how the shoes work to produce energy.

分析 德國(guó)弗萊堡大學(xué)(University of Freiburg)的一個(gè)科學(xué)團(tuán)隊(duì)正在研究一種可利用傳感器自動(dòng)系鞋帶的鞋,當(dāng)使用者碰撞鞋跟時(shí),鞋帶就能自動(dòng)解開(kāi).   在電影《回到未來(lái)》(Back to The Future)里,我們看到馬丁•麥克弗萊(Marty McFly)耐克鞋自動(dòng)系鞋帶的神奇情景,已經(jīng)有26年了.如今,假如電影中對(duì)2015年的虛構(gòu)預(yù)言有一個(gè)能成真的話,自動(dòng)鞋帶今年可能真會(huì)成為現(xiàn)實(shí).
   工程師們?cè)O(shè)計(jì)出一款鞋可以自動(dòng)系鞋帶,并可根據(jù)腳型自動(dòng)調(diào)節(jié).   只需滑動(dòng)控制器,腳穿進(jìn)去時(shí),壓力傳感器就會(huì)告知"智能鞋",觸發(fā)鞋跟的小發(fā)動(dòng)機(jī),將鞋帶系緊.
   當(dāng)你想要脫鞋時(shí),碰撞鞋跟兩次,發(fā)動(dòng)機(jī)就會(huì)釋放鞋舌部位的彈簧,松開(kāi)鞋帶讓你脫鞋.   這項(xiàng)獨(dú)創(chuàng)性的發(fā)明甚至無(wú)需充電或更換電池,因?yàn)樗鼉H靠你走路時(shí)雙腳的擺動(dòng)來(lái)發(fā)電.
   德國(guó)南部微加工和信息技術(shù)研究所(The Institute for Micromachining and Information Technology)工程師克賴維斯•伊利(Klevis Ylli)表示,這種鞋可以幫助不同的人.
他說(shuō):"值得注意的是,這種鞋帶可供行動(dòng)不便的老年人使用,也可以供孩子使用,或者作為一種生活產(chǎn)品."
   目前,這項(xiàng)設(shè)計(jì)還是雛形.當(dāng)兩只鞋中極性相反的磁鐵互相移動(dòng)時(shí),設(shè)計(jì)師能巧妙地獲得能量.然后將這些能量給電池充電,走一個(gè)小時(shí)的路,產(chǎn)生的電量足以系緊一次鞋帶,而解鞋帶時(shí)只需依靠彈簧,因此無(wú)需能量.

解答 29C.標(biāo)題判斷題.閱讀全文可知,文章的第一段就是本文的中心段落,全文都是圍繞這一段而展開(kāi)的,故答案選C.30B.細(xì)節(jié)理解題.根據(jù)文章的"Engineers have designed a shoe that can automatically lace up,adjusting itself to the shape of your foot."這句話的意思"工程師們?cè)O(shè)計(jì)出一款鞋可以自動(dòng)系鞋帶,并可根據(jù)腳型自動(dòng)調(diào)節(jié)."可知答案選B.31D.細(xì)節(jié)理解題.根據(jù)文章最后一段的意思"當(dāng)兩只鞋中極性相反的磁鐵互相移動(dòng)時(shí),設(shè)計(jì)師能巧妙地獲得能量.然后將這些能量給電池充電,走一個(gè)小時(shí)的路,產(chǎn)生的電量足以系緊一次鞋帶,而解鞋帶時(shí)只需依靠彈簧,因此無(wú)需能量."可知答案選D.

點(diǎn)評(píng) 本題是新聞報(bào)道類閱讀.本題重在理解全文的行文結(jié)構(gòu)和意思.對(duì)于題目中的問(wèn)題要充分理解原文,在文章中找到答案,利用文章的信息進(jìn)行作答.本文是總分結(jié)構(gòu)形式的文章.

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