金黄色葡萄球菌与表皮葡萄球菌的共同特点是
A.噬菌体分型
B.SPA
C.人群带菌率高
D.耐热核酸酶
E.溶血素
参考答案:C
You________ play in the street because it is easy to have an accident .
[ ]
A. must
B. can
C. mustn't
诱发婚姻恐惧的主观因素主要有人格因素和认知因素