Some of the students were late for the meeting, but I can’t remember _____.

A．what

B．when

C．which

D．whom

摄入或补充过量的钙对人体的危害是能导致（）。

A.骨质增生

B.骨关节炎

C.钙吸收率增加

D.奶碱综合症

E.血浆pH值升高