照样子,写一写。
这头象又高又大,身子像堵墙,腿像四根柱子。
天上的白云像____,像____。
On his _________ from Australia we gave him a welcome party.
已知点A(2x+y,﹣7)与点B(4,4y﹣x)关于x轴对称,试求(x+y)的值.