The policeman knocked on the door, but ________ answered, so he had to call Jim.
A:somebody
B:anybody
C:nobody
D:everybody
Does Chi Yong have a soccer ball?
No,____ ____.
如图是“多莉”羊的培育过程示意图:
请你根据图中提供的信息解答下列问题:
cos300°等于( )