按照传播符号的类型，广告媒介可分为（）。
A.单向媒介
B.相互媒介
C.大媒介
D.印刷媒介
E.电子媒介
参考答案：D, E
—The light in his room is still on. Do you know _______?
—In order to get ready for the coming exam.
A．why he stays up so late
B．if he works hard
C．what he is doing
D．when he will stop working
与富含酪胺的食物合用会引起头痛，严重时会出现高血压危象的药物是
A．单胺氧化酶抑制药B．对乙酰氨基酚C．左旋多巴D．鹤草酚E．特非那丁
