按收入准则规定，房地产企业将开发的房地产售出后，虽保留了对该房地产的物业管理权，但房地产售出时能确认收入。( )
参考答案：对
— Hi! John, would you like to play football with us?
— Oh，I can’t. I ___ my lesson all the morning and still need half an hour.
A．am reviewing
B．have been reviewing
C．have reviewed
D．reviewed
撤回、更改普通邮件由寄件人填写（），并签章交收寄局办理。
A.改寄邮件申请书
B.邮件撤回、更改、查询受理书
C.国内特快专递邮件撤回/查询申请书
D.国际特快专递邮件撤回/查询申请书
