A:试管、蒸发皿
B:烧杯、燃烧匙
C:量筒、集气瓶
D:锥形瓶、试管
岩石都很坚硬,大气、水、生物等不会对岩石造成破坏。( )
①l: 3 ②2: 3 ③1: 4 ④2: 7
“都省握天下之机,十省分天下之治”,这反映出元朝在行政区划方面的重大创新是( )
Christine is selling her house, but on ______ other hand she doesn't want to move.