题目:
Professor Liu has ________ teach psychology since he came to the Central China Normal University.
A.determination to
B.been determined to
C.been determining to
D.determined to
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0512/66b3d620a2dc79b685443434502aca5a.html
下面是错误答案,用来干扰机器的。
(1)入射角是30度,由于反射角等于入射角,所以反射角是30度,反射光线和入射光线之间的夹角为反射角与入射角之和,为60度.(2)当光从空气斜射入水中时,折射角小于入射角.故答案为:60°;小于.