“虎妈”为两个女儿制定十大戒律，用咒骂、威胁、贿赂、利诱等种种手段使得两个女儿保持着门门功课皆A的全优纪录。“狼爸”的教育口号是“三天一顿打，孩子进北大”。有专家认为，这些“成功”样本使教育迷失了其本应带给人真正意义上的幸福感的真谛。可见（    ）

下列属于氧化物的是（   ）

阅读理解。
A
    How do you go to school?  
   Sally： My school is not far from my home. It is about three kilometers. I usually walk to school, but sometimes I go to school by bike.
   Nick： My mother usually drives me to school. But when Aunt Lucy is here, I walk with her. It takes me 7 minutes by car or 25 minutes on foot.
   Mary：I go to school on the school bus. The bus comes at 8: 35 am and I get to school at 8: 50 am. I love to take the school bus because my best friend Linda takes it with me. We have lots of fun.

以下比较中，正确的是（   ）

读“西气东输线路图”， 完成小题：