— Jack! You are wet through. Didn't you listen to the weather report this morning? 

— No, I didn't. I was in a hurry. Besides, it ______ when I left. [ ]

A．was raining

B．wasn't raining

C．would rain

D．Hadn't rained

关于自动比较工具 ______ 比较器，说法不正确的是 ______。

A．比较器是检查两组数据异同的计算机程序
B．比较器可以告诉用户是否出现了差异
C．比较器可以告诉用户测试是否失败或通过
D．较为先进的比较器还可以辅助用户浏览差异