A:银Hg
B:氖气Ne2
C:氯化铁FeCl2
D:氧化铝Al2O3
读图1“东北地区气温年较差分布示意图”和图2“东北地区地形简图”,回答问题。
– Can a plane fly _______ the Atlantic Ocean?–Yes, but it needs to go _______ the clouds for hours.