根据句意及首字母提示,填写单词(1)I’d like to have two apple p____ .(2) Boys, stop t____ stones at the poor dog.(3)The dish Mom cooked p____ a nice smell.(4)One c____ means a hundred years.(5) In a____ times, it was hard for people to travel around.
已知定义在R上的函数fx满足f4=f-2=1,f'x为fx的导函数,且导函数y=f'x的图象如右图所示.则不等式fx<1的解集是( )
一个半径比地球大2倍,质量是地球质量的36倍的行星,它的表面的重力加速度是地球表面的重力加速度的( )