— I haven't finished my essay because the computer broke down when I was downloading the

required data last night.

— Really! You could have turned to me. I         mine. [      ]

A. didn't use

B. won't use

C. hadn't used

D. wasn't using

期货公司可以通过（）措施来落实投资者适当性制度。

A.制定投资者适当性标准的实施方案

B.执行客户开发管理制度

C.执行开户审核工作制度

D.完善业务流程与内部分工