题目

 I think the blue dress is         than the red one A. very beautiful       B. very more beautiful C. much beautiful       D. much more beautiful 答案：D如图所示的各现象中，属于光的直线传播现象的是（　　）A．人在阳光下有影子B．水中倒影C．铅笔在水中弯折D．海市蜃楼