Many people feel that their parents were harder on them than on their brother or sister

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• I have a twin sister,Kitty,She has longer hair than me.I don't like long hair.Many people think we（ 1 ）have lots of things in common.I'm come to our home,Kitty often sitsthere and says（ 2 ）,but I like to talk with them.So she is（ 3 ）than me.Kitty likes reading,drawing and cooking.I just like swimming and playing basketball.She has（ 4 ）hobbies than me,but she isn't as althletic（ 5 ）me.Because Kitty does 6 than me at school,my parents often say to me,"（
• Many people feel that their parents were harder on them than on their brother or sister
• I have a twin sister,Kitty． She has (11) hair than me． I don't like long hair．Many people think we (12) have lots of things in common．l-m afraid this is not true． When my parents ’friends come to our home,Kitty often sits there and says (13) ,but I like to talk with them．So she is (14) than me． Kitty likes reading,drawing and cooking． I just like swimming and playing basketbaIl．She has (15) hobbies than me,but she is not as athletic (16) me． Be-cause
• Many people feel that their parents were harder on them than on their brother or sister
• αi（i=1,2,3,）是3维列向量,若|A|=|α1,α2,α3|=1,令B=（α1+α2,α1+4α3,3α2）,则|B|=?
• 设αβγ1,γ2,γ3都是4维列向量,A=(α,γ1,γ2,γ3),B=(β,γ1,2γ2,3γ3),如果已知|A|=2,|B|=1,求|A+B|要详细过程（不明白为什么答案上2、3、4提取公因式出来后,|B|的前面为什么乘1/6）