听下面一篇短文，回答第16-20小题．
16．Which birthday of the mother was coming？
A．The 55th．
B．The 60th．
C．The 65th．
17．What kind of present did the rich man want to give his mother？
A．Strange．
B．Special．
C．Usual．
18．How much did the rich man pay for the bird？
A．50，000．
B．5，000．
C．4，000．
19．How many language could the bird speak？
A．five．
B．eight．
C．Thirteen．
20．What happened to the bird in the end？
A．It flew away．
B．The rich man's mother ate it．
C．Someone bought it from the rich man's mother at a higher price．