草地资源可持续利用
参考答案：
通过合理和适度的开发利用，在保持草地稳定生产的同时，又不使草地出现退化，从而实现草地的草地资源的可持续利用。
— Hello, may I have an appointment with the doctor?
— ____
A．Sorry, he is busy at the moment.
B．Why didn’t you call earlier?
C．Certainly. May I know your name?
D．Sorry, he doesn’t want to see you.
临床上出现呼吸困难，动则喘甚等症，多责之于（）。
A.心与肾
B.脾与肾
C.肺与肾
D.肝与肾
E.肝与脾
