问题标题：
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
问题描述：
| 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. |
崔建群回答：
1．which2．with3．tohold4．the5．when6．togo7．it8．using9．crowded10．environmental
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