The invention of different gears on a bicycle affected which THREE of the following? A Wheel size B Balance C Ra

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问题 The  invention of different gears on a bicycle affected which THREE of the following?
A    Wheel size
B    Balance
C    Rate of speed
D    The back wheel
E    Safety
F    Downhill travel

选项

答案D

解析

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The invention of different gears on a bicycle affected which THREE of the following? A Wheel size B Balance C Ra

雅思听力

雅思（IELTS）

Severaldaysago,Icameacrossastrangerinthestreetwhostoppedandaskedmedirections.I【C1】________toshowhimthewayt

Severaldaysago,Icameacrossastrangerinthestreetwhostoppedandaskedmedirections.I【C1】________toshowhimthewayt

PeopleallovertheworldknowWimbledonasthecentreoflawntennis.In1874itwasacountryvillage,butitwasthehome

ItwasClark’sfirstvisittoEngland,andhewaslookingforwardtohisfirstjourneyonLondon’sUndergroundRailway.Against【

Youmightbesurprisedtoknowthatbicycleshaveexistedforabouttwohundredyears,butnooneissurewhofirstmadethispo

Whatisthesubjectofthisconversation?

AartexhibitionBbandentranceCcarparkDcraftfairEexhibitors’entranceFfringestageGlock-upgaragesH

HowlongdidChrisworkataradiostation?

PASSAGEONE(1)OnJuly7th,IwastravelinginLondon.IwashavingbreakfastatahotelverynearLiverpoolStreetStation

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