既含内含子又含外显子的RNA是 A.tRNA B.mRNA C.rRNA D.SnR 发布时间:2017-07-20 19:25 │ 来源:www.tikuol.com 题型:单项选择题 问题: 既含内含子又含外显子的RNA是A.tRNAB.mRNAC.rRNAD.SnRNAE.hnRNA
题型:单项选择题 患者女,24岁。精神遭受打击后开始厌食3个月,双臂、面颈出现暗红斑2个月,口腔溃疡、腹泻半个月。实验室检查结果显示贫血、低蛋白血症。给予复合维生素B、烟酰胺、富马酸亚铁治疗2周,症状明显缓解。诊断为A.光敏性药物皮炎B.接触性皮炎C.晒斑D.肠病性肢端皮炎E.烟酸缺乏症 查看答案
题型:单项选择题 —I wonder if she _______ to the party.—She is sure to come if it _______ rainy tonight. [ ]A. comes; hasn't B. will come; doesn't C. comes; will D. will come; isn't 查看答案