—Don't you think the London Olympic Games _______?
—Sure it was! The athletes did really great!
A:success
B:successful
C:succeed
D:successfully
(1)求函数f(x)的单调区间;
(2)设g(x)=f'(x),其中f'(x)为函数f(x)的导函数.判断g(x)在定义域内是否为单调函数,并说明理由.
关于下列四个情景的说法错误的是( )