长方形的长和宽互相______，平行四边形的对边互相______．
据分析可知：长方形的长和宽互相垂直；
平行四边形的对边互相平行．
故答案为：垂直、平行．
用词，短语或句子补全对话。
(Wang Tao and Li Ming are going to play basketball. They want to invite Lin Hai, but...)
A: We are going to play basketball. 1. ___________ ?
B: Yes, I'd like to. But I can't.
A:2. ___________.
B: I have to see Xiao Fang in the hospital.
A: 3. ___________?
B: She has a stomachache and she doesn't want to eat anything.
A: 4. ___________. Does she often eat junk food?
B: Yes, she often eats junk food. It's bad for her 5. ___________
A: That's right. Let's go to see her together, shall we?
B: OK.Let's go.
宽频带数字地震仪
