自行车在北京很受欢迎,骑车上学和上班都很方便.但是现在越来越多的人---,

Injapan,thethreemostpopularwaystoschoolarebybus,trainandbike.popular受欢迎的Injapan,thethreemostpopularw

InBeijing__a_______great________many__________of___studentsgotoschoolbybike.或者alargenumberof

Inthemorningtogotoschoolbybike.Atruckturnright,mybikebumpedintoatruck.Ifelltotheground,thebikewaswre

设乘车速度为x每分钟,则骑车速度(1/4)x每分钟,步行速度为(1/8)x每分钟,于是全程长：30*(1/4)x,乘公共汽车上学的总时间为：[30*(1/4)x*(4/5)]/(x)+[30*(1/4

她在我们很受欢迎：Weareverypopularwhenshe'saround.楼上的知道自己再说什么吗?

Hegoesto/studiesinBeijingPrimaryschool.

AsIenteredsenionsecondaryschool,myfatherboughtmeabrand-newbicycle.Bicyclingisverypopularamongmyclass

Nowadaysmoreandmorepeoplehavetheirownbike,ItisverypopularinBeijing.thebikeiseasytouse,wecangotoschoo

BicycleisverypopularinBeijing,itisconvenienttorideittoschoolortowork.Ourgovernmentshouldadvocateourc

therearelotsof/there'realotof

inour.school,the.mostpopularwayto.gettoschoolis.bybike.再问：你的回答完美的解决了我的问题，谢谢！

由题知，小敏骑自行车受路面的阻力：f=0.05×600N=30N，∵小敏匀速骑车，∴小敏的骑车动力：F=f=30N，小敏做的功：W=Fs=30N×100m=3000J，小敏蹬车的功率：P=Wt=300

我也是骑车上学,每天来回三十公里不到,市区道路,来回行程共用时75分钟,本人微胖,骑得是捷安特的公路车OCR系列,骑得很舒服,没有山地车那种起不了多远就感觉上气不接下气的感觉!

Thesongispopularamongtheyoungsters

Therearemoreandmorepeolpegooutbybike.Itisverypopularinmostofthecitiesforitsconvenience.Especiallyins

Ilikebicyclingbecauseithassomanythingsthatenhanceone'slife.Bicyclingisateacherandparallelslifeitself

Today,bicyclesarestillverypopularinlargecities,Ridingabiketoschoolorworkisveryconvenient.Doyoulikeri

BicycleisalsoverypopularinBeijing,becauseit'sveryconvenienceforgoingtoschooloronduty.Now,moreandmore

ShestudiesinBeijing.

.鹅毛大雪中,趑趄前行.爸爸骑着自行车,一边小心翼翼地避让着行人车辆,一边在茫茫的雪地上划出一道弯弯曲曲的车辙；时间的流逝是那样的缓慢,我的心跳在这样的小心翼翼与弯弯曲曲中几乎凝固住了.