Thebicycleisoneofthesimplestyetmostusefulinventions(发明)intheworld.WhatismostsurprisingisthatitwasnotinventedearlieralthoughthegreatinventorLeonardodaVincihaddrawn
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.
(1)
Bicycleswasinvented________.
[]A.
byLeonardodaVinci
B.
longbeforeLeonardodaVincidied
C.
soonafterLeonardodaVincidied
D.
longafterLeonardodaVincidied
(2)
Ifyouwanttomakethebicyclemoveyouneed________.
[]A.
rideashardasyoucan
B.
noenergyatall
C.
littleenergy
D.
quitealotofenergy
(3)