中心型肺癌与肺门淋巴结核鉴别意义最大的是()
A.纤维支气管镜+活检
B.结核菌素试验
C.血涂片
D.X线胸片
E.血培养
参考答案:A
— I'm really _____ before the exam.
— Take it easy. You're the best. [ ]
A. surprised
B. nervous
C. comfortable
D. confident
二元肥料