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The socks are _____ small for the boy.
1年前
已知曲面 z=1-x·x-y·y上的点处的切平面平行于平面 2x+2y+z=1 ,求点处的切平面方程.
1年前
用括号内动词的适当形式填空 I _____ (receive) many nice presents on my birthday party. How happy I was!
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
Mary_(not) dance well.横线里为什么是does ,而不是 can呢
1年前