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[主观题]
A) It's the dullest. B) It's ridiculous. C) It's short. D) It&
A) It's the dullest. B) It's ridiculous.
C) It's short. D) It's plain.
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A) It's the dullest. B) It's ridiculous.
C) It's short. D) It's plain.
若(a,b)=1,则S(ab)=S(a)S(b)(这里S(a)表示正整数a的正约数之和).
对任意a,b∈Z,S(ab)=S(a)S(b)?
The Egyptian goddess Pasht had a ______.
A.woman's head and a cat's body
B.woman's head and a lion's body
C.cat's head and a man's body
D.woman's body and a cat's head
The Webster's are ______.
A.Mary's foster parents
B.Mary's birth parents
C.Mary's good friends
D.judges