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These shoes look very good;I wonder ________. [ ]
1年前
The water is too deep. I couldn't see its bottom. (用hardly改为同义句 )
1年前
Mrs. Smith has a bottle of medicine named 666 POWDER FOR COLD at home. Here is the instuction of it.
1年前
若有理数 a,b,c满足|a-1|+(b+3)的平方+|3c-1|=0,求(abc)的100次方的值是多少?
1年前
已知等差数列an前n项和sn=-2n的平方-n求a1+a3+a5+…+a25的值
1年前