已知|x+1|+（x﹣y+3）²=0，那么（x+y）²的值是（　　）

一边打工，一边追梦，张军白天从事体力劳动，晚上在集体宿舍里读书学习。他利用4年时间通过了自考大专和自考本科的全部课程，后又踏上历时4年的考研之路。3次考研落榜，但他并不气馁，终于在34岁时如愿考上江西师范大学研究生。他表示：“我还会继续攻读博士．争取留在高校做科研”。张军的经历告诉我们

阅读理解

　Scientists say life will be very different in 2050.

    First, there will be no TV channels(频道)in 2050. People will choose a program(节目)from a computer and watch it on TV. In 2050, we will get information from the computers only.

    Second, water will be a big problem in 2050. In many places, people won't have water to drink.

    Third, cars will use new and clean fuels and they will go very fast. There will be a computer in every car. And the computers will control the cars and there won't be any accidents(事故).

   某商品进价为200元，按标价的九折卖出后，利润率为35%，求标价。