题目

— Mum, I've got the first prize in the photo competition.— ! A . Good luck B . Not at all C . Good idea D . Congratulations 答案：D下列说法正确的是A.两个有理数相加，和一定大于每一个加数B.两个有理数相减，差一定小于被减数C.最小的正数是1D.绝对值最小的数是0