问题
填空题
①分解因式：x2+2x+1=( )．
②若∠ α=40 °，则∠ α的余角是( )度．
答案
（1）（x+1）2；（2）50°
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①分解因式：x2+2x+1=( )．
②若∠ α=40 °，则∠ α的余角是( )度．
（1）（x+1）2；（2）50°
In China, very few children make pocket money, , in western countries, most kids make pocket money bythemselves. They make money in many different . When kids are very young, their parents help them sell the fruitsof their own trees to neighbours. Kids may also help do housework to make money at home. When they sixteen, they can make money by sending newspapers or by working in fast food restaurants, during the summerholidays. There are many of making pocket money by kids themselves. First of all, they learn the of money byworking hard so that they will not waste any. Secondly, they learn to money to buy things they need or want, suchas books, pencils, movies and even clothes they like. Thirdly, they learn to the daily life problems by helping theirparents or others. Making pocket money is for children when they grow up. That is why parents encourage theirkids to make pocket money.
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