Many Chinese brands, __________their reputations over centuries,are facing new challenges from the modern market.
A:having developed
B:being developed
C:developed
D:developing
— Through “Didi”. It is easy.
下列事例中,不能说明分子在做无规则运动的是( )
如图所示,图中有5组数据(用字母代表),现准备去掉其中一组,使剩下的4组数据的线性相关性最高,那么应该去掉的一组是( )