下列光学现象与规律不相符的是( )
A:钢笔“错位”﹣光的折射
B:手影﹣光的直线传播
C:海市蜃楼﹣光的反射
D:水中倒影﹣光的反射
Han Han's books are popular. They __________ by many teenagers.
根据句意及首字母或汉语提示,完成下列单词。 (1)The e____ is the biggest animal on land.(2)The old man p____ trees in spring every year.(3)My hobby is c____ stamps(邮票).(4)It's d____ to play football in the street.(5)Will you i____your teachers to your birthday party?
右图为1921年西欧各国工业生产指数(以1913年为100)。图中的数据主要说明