Nicotine is a drug(药) that gets one into the __________ of smoking.
A:habit
B:custom
C:harm
D:rule
物质名称
固态水银
金
铜
铁
钨
固态氢
熔点(℃)
-38.8来
1064
1083
1535
3410
-259
长方体ABCD—A1B1CD中,AB=2,AD=2,AA1=6,则点D到平面ACD1的距离是( )
如图所示,箭头表示正常的血流方向,则较粗血管能正确表示静脉的是( )
一Can you come to my party on Thursday, Jenny?
一Sorry, I can't. I finish my homework first.