题型:填空题 已知动圆C经过点F(0,1)并且与直线y=-l相切,若直线3x-4y+20=0与圆C有公共点,则圆C的面积[ ]A、有最大值为π B、有最小值为πC、有最大值为4πD、有最小值为4π 查看答案
题型:填空题 .—We’ll eat as soon as the meat is done.—It has__________to cook for another five minutes.A.stillB.yetC.alreadyD.may 查看答案