以下哪项是金黄色葡萄球菌与表皮葡萄球菌所共有的特点（）
A.产生金黄色色素
B.SPA
C.有核糖核酸酶
D.甘露醇发酵
E.血浆凝固酶
参考答案：C
Defeated by many failures, the young man finally ______.
A．gave out
B．gave away
C．gave in
D．gave off
