选择题:6. Nancy: Have you heard about Dana? She is going 题目分类:西北大学大学英语(上) 题目类型:选择题 查看权限:VIP 题目内容: 6. Nancy: Have you heard about Dana? She is going to get married with Graham!Scott:______(3分)A. Is it a real thing?B. Congratulations!C. You’re kidding!D. Good luck! 参考答案:
设y=(2x+1),则y′等于() 设y=(2x+1),则y′等于()A. -12x(2x+1)B.12x(2x+1)C. 2x(2x+1)D. 6x(2x+1) 分类:西北大学大学英语(上) 题型:选择题 查看答案