具有涩肠止泻功效的药物是()。
A.补骨脂
B.灶心土
C.肉豆蔻
D.石榴皮
E.乌梅
参考答案:A, B, C, D, E
In the new curriculum, some courses are , while others are optional for middle school students.
A.traditional
B.compulsory
C.impressive
D.significant
发动机油路故障,归结为“堵、漏”两种类型。