Tom and I are good friends．Tom is an English boy，but I am a Chinese girl．He is 12 and I am 13．He is in Class One．I’m in Class One，too．
    Tom has a nice soccer ball．He can  play it very well．I have a computer．I can  play computer games，but I can’t play soccer．It is difficult．Tom teaches(教) me to play soccer，and I teach Tom to play  computer games．Now (现在) I can play soccer and Tom can play computer games．

如图平行四边变形 ABCD中，E是BC上一点，BE∶EC=2∶3，AE交BD于F，则BF∶FD等于（     ）

下图为实验室干馏煤的装置图，请回答下列问题：

下面是四幅等高线地形示意图，最能体现“幽”这种形象美的是（ ）