农具的改进及广泛采用，对农业生产的发展起了重要作用。下图所示曲辕犁最早出现的朝代是（　　）

    The Spring Festival begins on the first day of the f____ month of the Chinese calendar(日历) while the Western New Year starts on the first day of J____．Before the Spring Festival comes，everyone b____busy．They clean their houses，cook a lot of d____food and go s____for presents．

    On the eve (前夕) of the Chinese New Year, every family member stays home for d____and welcomes the New Year with hope and happiness．They w____ the Spring Festival Evening Party by CCTV and go to bed very late．The children get “lucky money” f____ the older．With the m____ they can buy books, toys, food and many other t____．(完)

如图所示，两个等边三角形，两个矩形，两个正方形，两个菱形各成一组，每组中的一个图形在另一个图形的内部，对应边平行，且对应边之间的距离都相等，那么两个图形不相似的一组是（　　）

①北美洲的面积大约是亚洲的 $\frac{6}{11}$ ，大约是南极洲的 $\frac{12}{7}$ ．

②欧洲的面积大约是北美洲的 $\frac{5}{12}$ ，大约是大洋洲的 $\frac{10}{9}$ ．

③南美洲的面积大约是北美洲的 $\frac{3}{4}$ ，大约是非洲的 $\frac{3}{5}$ ．

请完成下表．

____