答案: D
3.解析: 细节理解题。根据文章第二段第一句“The robot is designed to snake through dark,narrow air conditioning ducts (管道) and clean them.”和第三段的第二句“The robot can clean off lots of dirt...”可知,这种机器人可以清理管道里的垃圾。
答案: A
4.解析: 细节理解题。根据文章第四段的第二句和第三句“EPSCO had cleaning equipment,but it needed someone to get into those ducts to
the dirty,dangerous work.Across India,for example,the task still falls to children”可知,EPSCO公司在过去经常雇佣小孩来清理管道垃圾。
答案: B
5.解析: 段落大意题。根据文章最后一段的前两句“Mr Azad and his ten employees are currently exploring robot designs to examine oil tanks or sewage (污水) pipes.Their biggest challenge is to make the robots userfriendly enough.”和整体理解可知,本段主要讲的是Azad团队正在致力于改善自己的机器人设计,故答案D符合文意。
答案: D
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