题型:问答题 简答题 科学家成功地利用精密仪器从石墨中分离出单层的石墨片,这是目前世界上人工制得的最薄的材料,如图所示。下列有关石墨片说法错误的是( )A.石墨片是一种单质B.石墨片与C60是同种物质,具有导电性C.在一定条件下,石墨片可还原氧化铜D.石墨片在氧气中完全燃烧的产物是CO2 查看答案
题型:问答题 简答题 ______ his home is the farthest from the school, he is the first one to get to school every day.[ ]A. BecauseB. AsC. AlthoughD. If 查看答案