A:中国面临亡党亡国的危险
B:党的工作中心要转移
C:解放思想的重要性
D:发展基层民主的重要性
如图为草原生态系统的食物网简图,据图回答下列问题:
当你踏入山林时,你会感觉到空气特别地清新和湿润,这主要是由于( )
如图,每个小方格都是边长为1个单位的小正方形,A,B,C三点都是格点(每个小方格的顶点叫格点).
(1)找出格点D,画AB的平行线CD;找出格点E,画AB的垂线AE;
(2)计算格点△ABC的面积.
Amy:Who's that ____ (bay boy)?
Chen Jie: He's ____ (me my) brother.
Amy: Is she ____ (you your) mother?
Chen Jie: Yes , ____ (She she ) is.
Amy: Is he ____ (you your) father?
Chen Jie: No, he isn't. ____ (he's He's ) my teacher!