选择题:—Our son has picked up some bad habits recently, a

题目内容:
—Our son has picked up some bad habits recently, and I am really worried about it.

— .

选择一项:
A. Yes, they have some bad habits.
B. Cheer up. I believe he will overcome it.
C. Well, he likes picking things up when he is out.
参考答案:

回溯算法和分支限界法的问题的解空间树不会是()A.有序树B.子集树C.排列树D.无序树

回溯算法和分支限界法的问题的解空间树不会是()A.有序树B.子集树C.排列树D.无序树

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