— Excuse me, ____?
— Sorry, I don't know. My watch(手表)is at home.
A:what's up
B:what time is it
C:what do you do
D:what would you like
求证:
如图是显微镜下看到的血涂片示意图,下列有关叙述错误的是( )
在 里填上“+”、“-”、“×’’或“÷”
42 16=58____ 14 7=7____
A 、+ B、- C、× D、÷