题目

---You weren’t bored with the band?    ---Far from it. I _____________ better music than this in my life.    A. had never enjoyed    B. had enjoyed     C. have never enjoyed    D. have enjoyed 答案：A16．如图装置常用来测定空气中氧气的含量．下列对该实验的认识中正确的是（　　）A．使用红磷的量越多，最终进入集气瓶的水也越多B．燃烧匙中的红磷可以换成细铁丝C．该实验可说明N2难溶于水D．若实验过程中，燃烧匙伸入集气瓶的速度太慢，会影响测定的结果