Many trees don't have ______________ leaves in winter.[ ]
A.some
B.any
C.and
答案:B
患者立某,男,67岁。症见下腹部肿块,腹痛阵阵,大便脓血,里急后重,肛门灼热,舌质红,苔黄腻,脉滑数。治疗方选()
A.茵陈蒿汤
B.白头翁汤
C.甘露消毒丹
D.五味消毒饮
E.黄土汤
如果发现种子田有严重的品种混杂现象,则田间检验员只需检查几个样()
A.1个
B.2个
C.3个
D.4个