题目

___________ a reply, he decided to write again. A. Receiving not  B. Not receiving   C. Not having received   D. Having not received 答案：C（2011?遂宁）下图四种现象中，属于光的折射现象的是（　　）A．瓶子在平面镜中的像B．水中山的倒影C．插入水中的铅笔好像弯折了D．屏幕上的手影