长方形的对边互相______，直角的两边互相______．
长方形的对边互相 平行且相等，直角的两边互相 垂直．
故答案为：平行且相等，垂直．
— Shall we take the 10:20 train?
— No. If we took that train, we _____ too late. [ ]
A. arrive
B. would arrive
C. will arrive
D. arrived
《2000年通则》中的D组贸易术语，属于象征性交货。
