下图是一组世界区域地图,图中甲、乙两地发展种植业生产的主要制约因素分别是( )
A:光热、降水
B:土壤、水源
C:风向、地势
D:地形、河流
如图所示,点E是平行四边形ABCD的边CB延长线上的点,AB与DE相交于点F,则图中相似三角形共有( )对.
His order is that all of us ____(get) there before 5 o'clock.
选词填空,用单词适当是形式填空
draw, look, see
①I can't ____ my pen. Where is it?
②You can ____ a beautiful doll.
③ ____, some birds can fly in the sky.