①在方格纸中,将△ABC向下平移5个单位长度得到△A₁B₁C₁,请画出△A₁B₁C₁;

②在方格纸中,将△ABC绕点O旋转180°得到△A₂B₂C₂,请画出△A₂B₂C₂.

增加：在缺词处加一个漏字符号( $\wedge$ ), 并在其下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下划一横线, 并在该词下面写出修改后的词。

注意：1）每处错误及其修改均仅限一词；

2）只允许修改10处，多者（从第11处起）不计分。

    Nowadays millions of people of all age take pleasure in a hobby which is both interested and fun. And every year more and more people start a stamp collection of your own and discover an interest which can even last lifetime. Starting your collection of stamps was easy because they are nowhere. Holiday and birthday postcards and letters being sent by your friends and relatives can provide you for stamps from all over the world. But once you've taken collecting serious, you will probably want to join the Stamp Collectors'Club where exists to add more stamps to your collection.   

关于如图中甲、乙两大洲的叙述，正确的是（ ）
①甲大洲地势中部高、四周低；
②乙大洲地形以高原为主；
③乙大洲的尼罗河是世界上流量最大、流域面积最广的河流；
④甲、乙两大洲都被赤道和南、北回归线穿过．