两个数相除的商又叫做两个数的比.______.
根据比的概念“两个数相除又叫做两个数的比”,可知“两个数相除的商又叫做两个数的比”这个判断是错误的.
故答案为:错误.
. Our TV sets sell well, but ten years ago no one could have imagined such a big share in the market that they ____.
A.were having
B.had had
C.were to have
D.had
下图为某滨海地区某日某时等压面垂直剖面图(相邻两个等压面气压差相等)。读图,回答以下问题。
图中()
A.①比②气温高
B.②比③气温低
C.③比④气压低
D.④比①气压高