（ ）不属于M3的构成部分。
A．现金
B．活期存款
C．银行承兑汇票
D．公司债券
参考答案：D
网络安全应用协议SSL协议工作在 (1) ，HTTPS协议工作在 (2) 。
2（）
A．数据链路层
B．网络层
C．传输层
D．应用层
whatever great achievements the future may have in store for China, ______ is likely that many of them will be born in Zhongguancun.
A．it
B．which
C．she
D．that
