下列两幅图片反映了德国历史上版图的变化情况。其变化顺序正确的是（）
A.③①②④
B.④③②①
C.①③②④
D.③④①②
参考答案：C
简述魏晋南北朝时期文书档案工作制度的变化。
中国现有宜农荒地3500万公顷。( )
A. China now has 350 million hectares of wasteland which are suitable for fanning.B. China now has 35 million hectares of wasteland which are suitable for farming.C. China now has 3.5 million hectares of wasteland which are suitable for farming.D. China now has 35 billion hectares of wasteland which are suitable for farming.
