五味的阴阳属性,属于阴的一组是()
A.辛、甘、苦
B.酸、苦、咸
C.甘、淡、酸
D.辛、甘、淡
E.酸、苦、甘
参考答案:B
—May I surf the Internet now?
—No, ______ you have finished doing the dishes. [ ]
A. unless
B. if
C. because
D. when
幽门梗阻的原因有____________、____________和__________。