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09:50 212 52123 5159A. He has delivered speeches to the neighbourhood.B. He has devoted all his time to offering courses.C. He has provided professional coaching on fire safety.D. He has still undertaken some rescue work voluntarily.英语·第5页（共12页）维护权益严禁提前考试第一-举报者重奖1000元电话：（0）1898757384526.Which of the following can best describe Jeff Ohs?A. Enthusiastic and generous.B. Keen and considerate.C. Intelligent and humble.D. Courageous and committed.27. What is the author's purpose in writing the text?A. To honor a hero's lasting influence.B. To record an unforgetable ceremony.C. To show sympathy for the pitiful victims.D. To praise what firefighters do in the community.CHistory was recently made at a half-marathon in Beijing. In addition to welcoming 12, 000runners, the race also featured 21 robot participants.The only design rule for the competing robots was that they were bipedal （双足行走的）instead of running on wheels. Otherwise, it was a free for all, resulting in interesting designchoices with mixed results. The strategies used included robots with kid-sized sneakers, or shoesmade out of tape. Some didn't have a head, while others did, resulting in teams fixing themmid-race to prevcnt them from falling. Others used knee pads （护膝） to prevent them frombreaking in caso thcy fall downwards - and many of them did.Only six of the 21 robots finished the race. Running on a separate track from the humancompetitors,almost every robot faced difficulties, from falling down to overheating. One robotneeded a cooling pad to make it to the end while others had liquid sprayed on them.All robotswere accompanied by two or three human operators. who ran beside them to help control theirspeed with control panels or to clear their path.The winner was a robot named Tiangong Utra, designed by -UBTech and the BcijingHumanoid Robot Innovation Center. It finishod the race in two hours and 40 minutes. Despitebeing the robot victor, its path was not free of accidents either. It fell down once and its teamhad to chauge its battcries three times“Uutil five years ago or so, we didn't really know how to get robots to walk reliably," AlanFern, a robotics professor at Oregon State. “And now we do, and this will be a gooddemonstration of that."Ferm also noted that there's no market demand for running robots,which likely explains whyit's not a priority for developers, adding that it was definitely interesting to see them followinstructions in a challenging environment. As such, the half-marathon provided them with aplatform to showcase their hardware robustness (稳定性）. Ultimately,there's no need to worrya robot willikely not beat you in a race. Not right now anyway.英语·第6页(共12页)28.How did the robotparathon?存网盘页面管理转Word笔记标注