语法填空阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空.AnAmericaninventor,DeanKamen,sayshehasinventedtheworldsfi
语法填空
阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或
使用括号中词语的正确形式填空.
AnAmericaninventor,DeanKamen,sayshehasinventedtheworldsfirstselfbalancingindividual
transportvehicle,__1__iscalledtheSegwayHumanTransporter.TheSegwaylookslikealongstick
__2__twowheels.Thestickhashandlesforaperson__3__(hold).Thewheelsareconnectedbya
platform.Thepersonstandsontheplatformandholds__4__handles.Thevehiclemovesforwardor
backward__5__thepersonmoveshisbodyinthatdirection.Thedriverturnsthehandles__6__(go)
leftorright.TheSegwayhascomputersandgyroscopedevicestomake__7__moveandbalance.Itis
poweredbybatteriesthatcanberechargedinafewhoursby__8__(use)anelectricoutlet.Itcantravel
ataspeedofnineteenkilometersperhour.Itcostslessthantencentsadaytooperate.Itdoesnot
producepollution.MisterKamensaystheSegwaycouldreplacecarsin__9__(crowd)citycenters.He
saysitwasdesignedtoreducepollutionandsolveother__10__(environment)problemsincities.
However,itwasnotdesignedtotravelonroads.