A:regarding
B:to regarding
C:to regard
D:regarded
— I to school at eight. What about your brother?
—He to school at seven thirty.
下列句子中划线词语运用不恰当的一项是( )
连词成句
关于艾弗里“肺炎双球菌转化实验”和“噬菌体侵染细菌实验”的叙述中,正确的是( )