Choose THREE letters, A-E The invention of different gears on a bicycle affected which THREE of the following? A Wheel size B Ba

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问题 Choose THREE letters, A-E
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F

解析

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Choose THREE letters, A-E The invention of different gears on a bicycle affected which THREE of the following? A Wheel size B Ba

雅思听力

雅思（IELTS）

AtacertainperiodinEarth’shistory,itsatmospherecontainedalmostnooxygen,althoughplantswereproducingvastquantitie

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IntroductionandInterviewInterview(choose1)Let’stalkaboutwhereyoulive.Whatisyourtownfamousfor?

Two-wayDiscussionWe’vebeentalkingaboutanimportantdecisionyoumadeandnowI’dliketodiscusswithyouoneortwom

Studyingabroad-Howdoyouthinkstudyingoverseaswillbedifferenttostudyinginyourowncountry?-Whatproblemsdoyout

DescribeanelderlypersonwhoyouenjoytalkingtoYoushouldsay:whothispersoniswhatyourrelationshipwiththispersoni

Shouldfilmsbecensoredorshouldwebefreetochoosewhateverwewanttosee?

Aretheydifferentfromthewayspeoplegotnewsinthepastfewdecades?

Describeanimportantinvention.Youshouldsay:whattheinventioniswhenitwasinventedwhatchangesitbroughtandexplain

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设曲线y=x2+ax+b与曲线2y=xy3一1在点(1，一1)处切线相同，则()．

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排列顺序。例如：A可是今天起晚了B平时我骑自行车上下班C所以就打车来公司BACA还是从健康的角度看B无论是从味道上看C这道菜都值得点

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