具有升浮作用的药味是（）
A.酸
B.苦
C.甘
D.辛
E.咸
参考答案：C, D
At the meeting they discussed different ______ to the study of mathematics.
A．approaches
B．means
C．methods
D．ways
胆管结石和急性胆管炎急性发作的典型症状是
A．腹痛、呕吐、高热B．腹痛、呕吐、黄疸C．腹痛、黄疸、腹泻D．腹痛、腹胀、昏迷E．腹痛、黄疸、高热
