关于亚洲的地理特征,错误的是( )
8000米=____千米
用适当的介词填空
(1)He was born____ a cold morning.
(2)The girl began to learn to play the piano____ an early age.
(3)The beautiful music was____ Gu Jianfen.
(4)We often watch concerts____ TV.
(5)The boy can play all types____ instruments(乐器).
选择坝址是修建水库的关键之一.如图中所示方案中,构造稳定,地基稳定,地基坚实,最适宜建坝的是( )