“∠A和∠B是对顶角”是“∠A=∠B”的（　　）

A．充分条件

B．必要条件

C．充要条件

D．既不充分也不必要条件

There are many children in the park. Some are playing soccer ball. ________ are sitting on the grass.[ ]

A. The other    

B. The others    

C. Others    

D. Another