将方程3x（x﹣1）=5（x+2）化为一元二次方程的一般式，正确的是（　　）

        Kang kang____his friends all like animals. On Sunday.They often go to the____. Kangkang likes monkeys very much. He thinks they are so ____. Michael likes pandas because they are cute. The color of panda is black and____.Jane's favorite ____ is elephant. Elephants are kind and they have long ____. What about Maria?  She ____ tigers. They are very strong. There is a tiger show in the zoo____10 a.m in the morning. So they often have a ____ time there. When they go home, they say____to their animal friends.

如图，司机发现前方十字路口有红灯，立即减速，在B处踩刹车，此时测得司机看正前方人行道的边缘上A处的俯角为30°，汽车滑行到达C处时停车，此时测得司机看A处的俯角为60°．已知汽车刹车后滑行距离BC的长度为3米，求司机眼睛P与地面的距离．（结果保留根号）

这篇散文写于1961年，正是我们国家的“困难时期”，即“三年自然灾害”。在文中作者强调“____”，是有针对性的。