禽病的诊断方法主要包括几个方面的诊断是禽场基本情况的调查与分析、（）、病理解剖学检查、微生物诊断。
参考答案：临床检查
—Who's the man over there? Is it Mr Black?
—It _____ be him. He's much taller. [ ]
A. can't
B. mustn't
C. should
D. may
瓜叶菊要求的腐叶土、培养土、园土比例（）
A.4﹕4﹕2
B.5﹕3.5﹕1.5
C.5﹕2﹕3
D.3﹕5﹕2
