任务型阅读

    Traveling abroad during the vacation is the top choice of many Chinese people. But do we have good manners abroad?

    On Feb 25, a report said that a Chinese mother let her child pee (小便) in front of a shop in Tokyo. A journalist came to the mother. Instead of saying sorry, the woman said that her child had peed inside a plastic bag and had not made the floor dirty.

    This case has caused a big discussion about Chinese people' s traveling manners again.

    In recent years, improper behavior has become a real embarrassment for China as overseas tourism increases. With the improvement of living standards, more and more Chinese are traveling abroad. But there are still a number of Chinese lacking in (缺乏) a sense of public manners. For this situation, the Chinese government has suggested proper manners. The National Tourism Administration has made a list of tourists' worst behaviors, including littering, line-jumping, taking off shoes and socks in public, speaking loudly and smoking in non-smoking areas.

    We are going to improve the inner being of every Chinese citizen. “Traveling manners are a turning point.” said an official. And changes have begun to appear. Most people minded their behaviors during this Spring Festival holiday, according to the National Tourism Administration. They kept their voice down, waited in line and respected local rules.

已知不等式$a{x}^2-5x+b>0$的解集为$\left\{x|-3<x<2\right\}$,则不等式$b{x}^2-5x+a>0$的解集为(     )

已知实数a，b满足a²﹣b²=10，则（a+b）³•（a﹣b）³的值是____ 

读下图完成下列各题。