播到土壤里的种子不能萌发的原因是[ ]
A.种子不完整
B.胚已死亡
C.呈休眠状态
D.以上都有可能
答案:D
A Spear or a robot has the quality of technology only when it______.
A.is used both as a cultural and a physical object
B.serves different purposes equally well
C.is utilized by man
D.can be of use to both man and animal
男性,51岁,3天前受凉后即咽痛,畏寒,发热,体温达39.5℃。查体:咽部充血明显,扁桃体Ⅱ度肿大、充血,表面有黄色点状渗出物,颌下淋巴结肿大、压痛,胸透心肺未见异常。最可能的诊断是()
A.疱疹性叫峡炎
B.肺脓肿
C.细菌性咽-扁桃体炎
D.支气管炎
E.肺炎