【单选题】Our country is quite different from _____ twenty years ago. [ ]
【单选题】Great changes have taken place in that village. It is no longer ____ it was 10 years ago, ____ it was so poor.
【单选题】Great changes have taken place in that school. It is no longer ______ it was 20 years ago, ____it was poorly equipped.
【单选题】一坐着的乘客在火车(动参考系)加速运行时见到一物体从行李架上落下,将定参考系固连于地面,他所见到的这一个物体(动点)相对于他自己的运动是( )。
【单选题】世界著名的大牧场放牧业共同特点是( )
A.
地广人稀、气候干旱不适宜种植业发展,地租低,经济效益高
【单选题】Great changes have taken place in that school. It is no longer _____it was 20 years ago, ______it was so poorly equipped.