A:
B:
C:
D:
若直线3x-y+m=0与圆x2+y2-2x-2=0相切, 则实数m等于 ()
一共有多少个苹果?
从方框中选择适当的单词完成短文。
What's this on the table? It is a ____ of my new classroom. ____ at the picture. ____ can you see ____ the classroom? I can see a ____ desk in the front of the classroom. Some books are ____ the desk. I can see two white ____ , too. There are____ colored chalks (彩色粉笔n them. ____ is the broom (扫帚)? It’s ____ the door. I like this new classroom.
全球变暖引起的后果是( )