选择题:已知集合A={a,b,c}的所有非空真子集的元素之和等于12, 则a+b+c的值为 题目分类:高考 题目类型:选择题 查看权限:VIP 题目内容: 已知集合A={a,b,c}的所有非空真子集的元素之和等于12, 则a+b+c的值为 A.1 B.2 C.3 D.4 参考答案: 答案解析:
— ________ you let me paint the fence a little, Tom? —Well, no, Ben. I’m afraid — ________ you let me paint the fence a little, Tom? —Well, no, Ben. I’m afraid…. 分类:高考 题型:选择题 查看答案
As students, we should____________ourselves. We can’t spend much time playing co As students, we should____________ourselves. We can’t spend much time playing computer games. 分类:高考 题型:选择题 查看答案