I didn’t see Laura at the party last night. Do you know _______?

A．why didn’t she come

B．what happened

C．when would she arrive

D．where she has been

下列药物中，按一类精神药品管理的药品是

A．咖啡因粉

B．枸橼酸芬太尼针

C．美沙酮片

D．马吲哚片

E．盐酸吗啡片