爸爸身高是180厘米,我的身高是13分米,爸爸比我高多少?
两种答案:①180厘米=18分米,18-13=5(分米);
②13分米=130厘米,180-130=50(厘米)
----- Jack, is there __________ in today’s newspaper? ----- No, nothing.
A.anything important
B.something important
C.important anything
D.important something
齿轮齿面出现的胶合区不超过齿长()。