搜题请搜索小程序“爱下问搜题”
问题 解答题

根据上发现的规律，算出每组第2个个图形是什么．

（1）○△○△○△○△…这组第2个个图形是______．

（2）○△△○△△○△△…这组第2个个图形是______．

（3）△△○○△△○○△△…这组第2个个图形是______．

（j）上能自己出十道这样的题吗？试十试．

答案

（着）20÷2=着0

所以第20个个形是第着0个循环周期第2个个形，是△．

（2）20÷3=6…2

所以第20个个形是第7个循环周期第2个个形，是△．

（3）20÷v=5

所以第20个个形是第5个循环周期第v个个形，是○．

（v）△△△○○△△△○○△△△…这组第20个个形是（　　）；

20÷5=v

所以第20个个形是第v个循环周期第5个个形，是○．

故答案为：△，△，○．

单项选择题

Once a man and his wife worked for an old man. There was a big box in the old man’s living room. The old man pointed to the box and said, "There’s only one thing you (1) do. Don’t open the box. " (2) saying this, he left his home.The woman said to her husband," There must be (3) expensive in the box. Let’s open it, shall we" Her husband said (4) to her. But the woman didn’t give up her (5) . One day, she decided to find out (6) was in it. Her husband didn’t stop her. She opened the box and looked inside. To her surprise, she found nothing in the box. She tried hard to close it, but she (7) That evening the old man came home and found the box was (8) . He was very (9) and asked the woman and her husband to leave his home."But there was nothing in the box," the woman said. "We haven’t taken anything at all. "The old man (10) them, "The box is not important, but I cannot believe you. That’s important!

 

第（5）空应选择（）

A．work

B．box

C．way

D．idea
查看答案
单项选择题

( )是指债券持有人可按自己的需要和市场的实际状况，灵活地转让债券提前收回本金和实现投资收益。

A．偿还性

B．流动性

C．安全性

D．收益性
查看答案