不可作鸡血藤药用的植物有()
A.密花豆
B.大血藤
C.香花崖豆藤
D.常春油麻藤
参考答案:B, C, D
This important lesson by Professor Wang teaches primary students how to ______ themselves from danger.
A.pretend
B.prevent
C.prepare
D.protect
溶菌酶对G菌的作用()
A、破坏磷壁酸
B、裂解粘肽的取糖骨架
C、损伤细胞膜
D、抑制菌体四肽侧链与五肽桥链的联结