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Leo likes English, but sometimes he can’t get the___________(发音) right.
1年前
When water is heated to 100℃, s________ comes out from it.
1年前
Mitts and mittens are not different. They are ___________. [ ]
1年前
二元函数问题,求f(x,y) 1. f(x+y,x-y)=2(x^2+y^2)e^(x^2-y^2) 2. f(x+y,xy)=2x^2+xy+2y^2
1年前
有一堆糖果,其中奶糖占45%,再放入16块水果糖后,奶糖就只占25%,原来这堆糖果中奶糖有( )块.
1年前