肺炎链球菌的主要致病物质是
A．C反应蛋白
B．自溶酶
C．荚膜
D．外毒素
E．内毒素
参考答案：C
My uncle __________ until he was forty-five. [ ]
A. married
B. would marry
C. wasn't marrying
D. didn't marry
在网络化存储方案中，iSCSI和SAN适用的协议分别为______。
A．TCP/IP，SNMP B．IPX/SPX，IPC．LIDP，IP D．TCP/IP，FC
