厚朴的折断面特征()
A.平坦
B.纤维性
C.颗粒性
D.胶丝相连
E.层层剥离
参考答案:B
I can’t play soccer because I have ______ homework today.
A. too much B. too many C. much too
伤寒病人血培养阳性率高达90%是在
A.潜伏期
B.第1周~第2周
C.第3周~第4周
D.第4周~第5周
E.第5周以后