6个月以内的婴儿人工喂养时，奶量每日约需（）

A.牛奶100ml／kg

B.配方奶粉100ml／kg

C.配方奶粉30g／kg

D.配方奶粉20g／kg

E.8％加糖牛奶67ml／kg

It is required that the students ______ mobile phones in our school, so seldom ______ them using one.

A．can’t use; will you see

B．not use; will you see

C．mustn’t use; will you see

D．shouldn’t use; you will see