快件处理包括（）两个主要环节。
A、快件分拣，快件封发
B、快件验视，快件包装
C、快件包装，快件计费称重
D、快件包装，快件交件交单
参考答案：A
长方形的______相等，正方形的______条边相等．长方形和正方形都有______个角，都是______角．
-Has she agreed to the date for the meeting?
-Well, that's _____ she disagrees. [ ]
A. what
B. where
C. when
D. which
