问题
填空题
当x=3时，代数式(1+
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答案
解；(1+
)÷1 x-2
，x2-1 2x-4
=
×x-1 x-2
，2(x-2) (x+1)(x-1)
=
，2 x+1
当x=3时，原式=
=2 3+1
．1 2
故答案为：
．1 2
搜题请搜索小程序“爱下问搜题”
当x=3时，代数式(1+
|
解；(1+
)÷1 x-2
，x2-1 2x-4
=
×x-1 x-2
，2(x-2) (x+1)(x-1)
=
，2 x+1
当x=3时，原式=
=2 3+1
．1 2
故答案为：
．1 2
阅读下面短文，选择方框里A—E五个句子分别填入文中空缺处，使补全后的短文意思通顺，结构完整。（5分） It’s Peter’s birthday（生日）this Sunday. Peter and his good friends, Kate, Lily and Kangkang, go to the West Hill. Peter’s friends take a lot of food. They will have a picnic for his birthday. 小题1: Kangkang and Peter play games（游戏）小题2: At noon（中午）, Peter is hungry. 小题3: So he asks Kate to cook for him. Lily helps Kate cook. There is no water. 小题4:Peter is next to a tall tree. He plays with his dog. They think the picnic is very nice. 小题5:
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