油汗
参考答案：
皮脂腺分泌的油脂与汗腺分泌的汗混合物。
—What should I do if I failed the exam?
—If I_____ you, I _____ study harder next term. [ ]
A. am; will
B. were; would
C. am; would
D. were; will
药材"南板蓝根"的原植物是（）
A.菘蓝
B.菘青
C.欧菘蓝
D.蓼蓝
E.马蓝
