白喉棒状杆菌的致病因素有()
A.K抗原
B.链激酶
C.白喉外毒素
D.凝固酶
E.索状因子
参考答案:A, C, E
—Kate, we need some vegetables for dinner. Could you go and buy ________?
—Yes, sure. But I don't have ________ money.[ ]
A. any, any
B. some, any
C. any, some
D. some, some
给定材料中提到了“双规”,请简要解释“双规”的含义以及意义。不超过200字。