氢核磁共振谱是根据分子中不同化学环境的氢原子在谱图中给出的信号峰不同来确定分子中氢原子种类的。在下列6种有机分子中,氢核磁共振谱中给出的信号峰数目相同的一组是 A.①⑤ B.②④ C.④⑤ D.⑤⑥ 答案:C--- _______ leave at the end of this month. --- I don’t think you should do that until ________ another job. A. I’m going to; you’d found B. I’m going to; you’ve found C. I’ll; you’ll find D. I’ll; you’d find