假如你是Sandy,想邀请好友Amy来你家。根据下面提供的信息，用英语写一篇邀请信。(包含所有要点，注意格式，字数80左右。)

要点：（1）新家位于市中心，周围有银行、超市、医院。（2）邻居们友好善良，经常帮助人们解决各种问题,大家就像一家人一样。（3）家中有很多事可做。……(发挥1-2句)（4）如果你能来,我会非常高兴。沿着幸福路走(Happy Road)，在第二个十字路口向右拐。（5）很期待见到你。

Dear Amy,

     I would like to invite you to my new home.……

Yours

Sandy

结合材料，运用企业的经营与发展的知识，说明企业应如何破解“三高”现象。

如果mn<0，且m>0，那么点P(m²，m-n)在（   ）

   Today more and more cars go into families. Which car is the best for people? Different people have different ideas.
   Some people like the bright colour car made in China. It's really a good choice(选择). The bright colour car made in China is cheap, nice and safe. This kind of cars is suit for(适合于) the general income (收入一般的) family.
   Some people love famous foreign cars like Japanese cars, American cars and German cars. They're good but too expensive. But most people think famous foreign cars of better quality are better in safety. These are suit for the high income family or for business.
Some people like sports cars, because they're fast and exciting. Some sports cars are very nice but very expensive. Only rich people can afford them.
   Some people like travelling, so they need a travel car. Travel cars are comfortable. But they use much oil(油). What's the best car for us? Maybe it's a new and popular topic in life.