A:is going to be
B:will have
C:are going to be
D:is going to have
改变了新文化运动的方向和性质的是( )
(Ⅰ)求函数f(x)的解析式及f(x)的最小正周期;
(Ⅱ)若A为△ABC的内角,f(A)=4,BC=3,求△ABC周长的最大值.