—______! The man next to me has just gone. The seat is empty now.
A:You'd better not.
B:Of course not
C:Take care
D:Wait a minute
为我国核武器研制事业作出重大贡献,被誉为“两弹元勋”的科学家是( )
如图,点C在线段AB上,AC=8cm,CB=6cm,点M,N分别是AC,BC的中点.求线段MN的长.
下列对亚洲地理之最的叙述,错误的是( )
扩词练习
首____、____
记____、____