Every year lots of trees _______ to make our country more beautiful.

A．is planted

B．was planted

C．are planted

D．were planted

营运能力分析常用的比率主要有( )。

A．总资产周转率

B．固定资产周转率

C．应收账款周转率

D．存货周转率

E．资产收益率和所有者权益收益率