Lucy is a(n) ______ girl and she doesn't like talking much.
A:outgoing
B:athletic
C:quiet
D:wild
- Tom, you look tired this morning. What's wrong?
- I was busy and I didn't go to bed _________ 12 o'clock last night
在数轴上到原点距离等于2的点所表示的数是()
如图装置,将溶液A逐滴加入固体B中,下列叙述正确的是( )