患者,男,24岁,胁肋部出现成簇绿豆至黄豆大小水疱,围以红晕,呈带状分布,皮肤焮红灼热刺痛,见于()。
A.水痘
B.湿疹
C.热气疮
D.缠腰火丹
参考答案:D
He looked as if he _____ the answer.
A.knew
B.had known
C.knows
D.has known
细菌缺乏下列哪种结构在一定条件下仍可存活()
A.核质
B.细胞膜
C.细胞质
D.细胞壁
E.以上均可