内一点(不含边界),则点P在底面ABC的投影可能在( )
A:△ABC的内部
B:△ABC的外部
C:直线AB上
D:以上均有可能
⑴Can you put up the Christmas tree? ____
⑵We are going to write Christmas cards to our friends. ____
⑶Santa is a merry man in red clothes. ____
⑷It's a Chinese lantern for you. ____
⑸This morning we open the gifts! ____
A. B. C. D. E.
下图中虚线是某岛屿火山喷发后火山灰厚度等值线图(考虑风向作用),a﹤b﹤c。下列关于该岛的叙述,正确的是( )
①终年温和多雨 ②适宜生产柑橘、油橄榄 ③植被具有耐旱特征 ④雨热同期