农业推广的目标体系可以分为（）级
A.二
B.三
C.四
D.五
参考答案：C
. —Dad, dad! My head hurts so much. I think I’m dying.
—________, darling! The doctor says you will feel better soon.
A．That will do
B．There, there
C．That’s right
D．So long
排便时，间歇性带血，并有肿物脱出肛门外，排便完自行还纳，诊断为
A．外瘘B．Ⅱ度内痔C．直肠息肉D．直肠黏膜部分脱垂E．Ⅲ度内痔
