A:凯撒
B:安东尼
C:屋大维
D:斯巴达克
设函数f(x)在R上存在导数f′(x),∀x∈R,有f(﹣x)+f(x)=x2,在(0,+∞)上f′(x)<x,若f(4﹣m)﹣f(m)≥8﹣4m.则实数m的取值范围为( )
—________ great fun we had at the party last night!
—Yes, it was so exciting that everyone was happy.
下列物质不能使蛋白质变性的是( )