能治疗惊风、癫痫,又能治疗创面久不愈合及溃疡、烂蚀诸证的药物是()
A.珍珠母
B.珍珠
C.牡蛎
D.代赭石
E.石决明
参考答案:B
Finding information in today's world is easy. The ________ is how you can tell if the information
you get is useful or not.[ ]
A. ability
B. competition
C. challenge
D. knowledge
细菌菌落由光滑型变为粗糙型是因为细胞壁中哪种成分缺失 ()
A.脂质A
B.核心多糖
C.磷壁酸
D.特异多糖
E.脂蛋白