Thebicycleisoneofthesimplestyetmostusefulinventions(发明)intheworld．WhatismostsurprisingisthatitwasnotinventedearlieralthoughthegreatinventorLeonardodaVincihaddrawn|小学英语问答-字典翻译问答网

问题标题：

Thebicycleisoneofthesimplestyetmostusefulinventions(发明)intheworld．WhatismostsurprisingisthatitwasnotinventedearlieralthoughthegreatinventorLeonardodaVincihaddrawn

问题描述：

(1)

(2)

(3)

　　Thebicycleisoneofthesimplestyetmostusefulinventions(发明)intheworld．WhatismostsurprisingisthatitwasnotinventedearlieralthoughthegreatinventorLeonardodaVincihaddrawnpicturesforbicyclesandalsoforflyingmachinesandsomeotherthings．Thosethingswerenotproduced(生产)untillongafterhedied．

　　Apersonridingabicycleuseslittleenergy(能量)tomakethebicyclemoveandthereisnopollution(污染)atallwhenyouareriding．Evensoindevelopedcountriesmostpeopledon’ttraveltoworkbybicycle．Itisnotbecausethebicyclesareexpensiveorpeoplefeeltirediftheyridetowork．It’sbecausethenumberofcarsontheroadsbecomeslarger．Itcertainlybecomesmoredangeroustorideabicycle．Asaresultmorepeopleputtheirbicyclesawayandgotoworkintheircarsandinthiswaythesituation(情形)ismademoreserious．Perhapsthebestwaytomakeridingsaferandmorepopularistocreatepaths(开设通道)onlyforbicyclesandtomakeitsodifficultandexpensivefordriverstotaketheircarsintothecitythattheywillgobacktousingtheirbicycles．

Bicycleswasinvented________．

[　　]

A．

byLeonardodaVinci

B．

longbeforeLeonardodaVincidied

C．

soonafterLeonardodaVincidied

D．

longafterLeonardodaVincidied

Ifyouwanttomakethebicyclemoveyouneed________．

[　　]

A．

rideashardasyoucan

B．

noenergyatall

C．

littleenergy

D．

quitealotofenergy

陈少民回答：

　　答案：1．D;2．C;3．A;4．D;5．B;

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