昨天，杭州现代实验小学赵晨宇和杭州文海小学俞欣扬，都去坐了回地铁，感受杭州速度。快速、平稳，是他们的坐乘感受。

yesterday,Hangzhou modern experimental primary school ZhaoChenYu and hangzhou WenHai YuXinYang primary school,All went to sit Back to the suBway,Feel hangzhou speed.fast/smooth,Is their sit By feeling.

　　其实，对于地铁，他们早已关注。还有不少其他小学生，也从不同角度，关注着地铁。

In fact,For the suBway,They already concern.There are many other pupils,Also from different angles,On the suBway.

　　他们以对地铁的观察，结合所学的数学，出了一系列富有创意的数学地铁题。就连教数学的徐老师都直感叹，“孩子们的想象力，我远远不及啊。”

They oBserved the suBway,ComBined with the mathematical learning,A series of creative mathematics suBway proBlem.Even teach math xu teachers are straight exclamation,"The children's imagination,I more than ah."

　　我们采访了其中3位小学生，听听他们各自的地铁故事。

We had a interview with three pupils,Listen to their respective suBway story.

　

　出入口的“玻璃” Entrances and exits of the"glass"

　　昨天下午，杭州现代实验小学5年级的赵晨宇和爸爸一起，去体验杭州地铁。从打铁关站坐到武林广场站，“好快，10分钟就到啦。”晨宇兴奋地说。

Yesterday afternoon,Hangzhou modern experimental primary school grade 5 ZhaoChenYu and father together,To experience hangzhou suBway.From the iron is hot close station sit to wulin square station,"Good fast,Ten minutes to get to la."Morning yu said excitedly.

　　对于地铁，晨宇一直向往。“3年级去香港时，那里的地铁给我留下了深刻的印象。地铁快速便捷，很神奇。”她回忆。

For the suBway,Morning yu has Been yearning."The third grade when go to Hong Kong,Where the suBway left a deep impression on me.SuBway fast and convenient,amazing."She recalled.

　　在杭州地铁开通前，她去打铁关站探营，被出入口处的那方玻璃造型吸引。晨宇还拍了一张照片。

Before the opening of the suBway in hangzhou,She went to the iron is hot off the ground station,The entrance was out of the side of the glass modelling attract.Morning yu took a photo.

　　回到家里，她将照片导入电脑，对着电脑就在想，“这块玻璃跟我学的图形题有点接近，可不可以出一道玻璃题。”晨宇说。

Back to home,She will photos into computer,On the computer in want to,"This piece of glass follow me graphics proBlem a Bit close to,Can a glass proBlem."Morning yu said.

　　于是，她带上卷尺，又兴冲冲地回到工地，在“工地叔叔”的帮助下，测量估算了一些数据，融入她出的地铁题中。

so,She take tape,And excitedly to site,in"Site uncle"Under the help of the,Measuring estimation some data,Into her out of the suBway in question.

　

　●赵晨宇的地铁几何题 ZhaoChenYu took the suBway geometry proBlem

　　假设进站口一侧玻璃（如图）实线所示，C是DE的中点，∠D=45°,ADEB是直角梯形，AD=106分米，AB=36分米，那么：玻璃（四边形ABCD）的面积=( )平方米。

Hypothesis JinZhanKou side glass(As shown in figure)Solid line shows,C is the point of the DE,< D = 45 °,ADEB is rectangular ladder,AD = 106 decimeter,AB = 36 dm.,so:glass(Quadrilateral ABCD)Area =( )Square meters.

　

　地铁闸口和客流 Metro gate and passenger flow

　　杭州文海小学6年级的俞欣扬，昨天约上好友，过了一把地铁瘾。

Hangzhou WenHai primary school grade 6 YuXinYang,Yesterday on aBout friends,After a suBway addiction.

　　他买了一张单程票，从杭州下沙文泽站坐到萧山湘湖站，未出站，再返回坐到临平站。这1个多小时的体验，他感觉，“杭州地铁挺平稳的。”遗憾的是，“没有北京和深圳的地铁快。”

He Bought a one-way ticket,From hangzhou next arshavin ze station sit to xiaoshan xianghu lake station,Not outgoing,Back to sit to linping station.This more than one hour experience,He felt,"Hangzhou metro quite smooth."It is a pity that,"No Beijing and shenzhen metro fast."

　　在入口处，他留意了“闸口”数量，“有5个”。虽然当时人流密集，“我们还是很快通过了。”

At the entrance,He pay attention to the"gate"quantity,"There are five".Although at that time people intensive,"We were soon passed."

　　欣扬关心“闸口”，是因为，他把这个编入了数学地铁题中。与欣扬一样，采荷二小6年级的许展，也关注了地铁闸口问题，将它融入数学地铁题中。

Hin Yang care"gate",Because,He put this into the mathematical suBway in question.And hin as Yang,In charge of the discoordination 6 grade make exhiBition,Concerns aBout the suBway gate proBlem,Will it into the mathematics proBlem in the suBway.

　　●俞欣扬和许展的地铁应用题

- YuXinYang and make the exhiBition to solve them

　　市民从下沙文泽站乘坐地铁，在还未开放的闸口前排起了长队。假设每分钟里前来乘坐的人数一样多，若同时开3个闸口，则40分钟才能全部通过，若同时开4个闸口，则25分钟可以全部通过，那么：同时开放（ ）个闸口，就能在10分钟全部通过。 答：8个

Citizens from next arshavin ze station By suBway,In is not open gate in front of the up train.Assume that every minutes to take as the numBer of,If at the same time open three gate,The 40 minutes to all through,If at the same time open four gate,The 25 minutes can all through,so:At the same time open( )A gate,Can in 10 minutes all through. a:eight

　

　铺轨道真的好辛苦 Spread track really good hard

　　2年前，杭州拱宸桥小学6年级的沈家俊便开始关注杭州地铁，当时，地铁刚“上路”，还在铺轨道。

Two years ago,Hangzhou gongchen Bridge the primary school is grade 6 of shenyang CSL will Begin to pay close attention to hangzhou suBway,At that time,SuBway just"Hit the road",Also spread in orBit.

　　对于地铁的关心，源于小俊的一趟上海之旅。“去上海海洋水族馆，坐地铁很快就到了，中途不堵车。杭州的路太堵，如果地铁能早点开通，那该多好。”他回忆。

For the suBway concern,Little jun from a trip to Shanghai tour."Go to Shanghai ocean aquarium,Take the suBway soon,Midway is not traffic jam.Hangzhou way too plugging,If the suBway will Be opened,the."He recalled.

　　从上海回到杭州，他跑去地铁工地，与工人叔叔们聊。怎么铺轨道、一天能铺多长？

From Shanghai Back to hangzhou,He ran to the suBway construction site,And workers who are talking.How to spread track/How long can a day spread?

　　“地下构造很复杂，铺设技术高。”小俊专业地说。“叔叔们长期在地下施工，很艰苦。我们要好好地爱护地铁。”他认真地说。

"Underground structure is very complex,Laid technology high."Little jun professionally said."The uncle for a long time in underground construction,Very hard.We are going to take care of the suBway."He said it seriously.

　　当地铁开通临近，小俊想，“是否可以把铺设轨道的数据，用到数学题中。”

When the suBway near the opening,Little jun want to,"Whether it can Be laid orBit data,Used in the math proBlem."

　　●沈家俊的地铁应用题

- shenyang suBway CSL to solve them

　　2010年10月18日，甲乙两支工程队合作铺设24.75千米的地铁铁轨。甲队决定做9天休息1天，乙队做13天休息2天。已知甲队平均每天铺设40米，乙队平均每天铺设比甲多12.5%，那么：(a)工程完工时，乙队比甲队多铺设（ ）千米。(b)甲乙两个工程队合作完成铺设工程的日期是（ ）年（ ）月（ ）日。 答：0.99千米，2011年9月11日(记者 高逸平)

On OctoBer 18, 2010,Methyl ethyl two teams cooperation laid 24.75 kilometers of suBway track.A team decided to do 9 days rest one day,B team to make 13 days rest for 2 days.Known a team on an average day laid 40 meters,B team a day on average 12.5% more than armour laid,so:(a)When the completion of the project,B team more than a team laid( )km.(B)Methyl ethyl two construction team collaBoration laid engineering date is( )years( )month( )day. a:0.99 kilometers,SeptemBer 11, 2011(Reporter GaoYiPing)