题目

根据所给中文提示写出相应单词。Bob is a thirty-year-old man. He lives in（中国）. He is a tour guide（导游）. He often takes the travelers to visit beautiful places by （飞机）. He loves his job. He is never （迟到的）for work. But he is very busy every day. He has no time to clean his room. He puts his things（到处）. His room is not （整洁的）. He can't （找到）his things easily. So he will （请求）his roommate for （帮助）.On weekends, he doesn't clean his house. Because he likes sitting on his （椅子）and drinking tea. He thinks it'下面给出的四个三角形都有一部分被遮挡，其中不能判断三角形类型的是（ ）A． B． C． D．