=300×60÷2÷10,
=18000÷20,
=900(棵),
答:这个果园共有果树900棵
A. should B. would C. house D. soup ____
2+4=____
2+3=____
1+5=____
4+2=____
3+3=____
1+4=____
地球表面海洋与陆地面积之比是( )