第4题: [单项选择]What are they talking about A. They are talking about Sally. B. They are talking about their math test. C. They are talking about their English test. 参考答案:A 答案解析:[听力原文] M: Sally is really the top student in our class. W: I know. She not only did well in ma
A. prescription B. inspection C. alleviation D. therapy 参考答案:D 答案解析:考点 名词辨析。therapy“疗法”;prescription“药方”;inspection“检查,视察”;alleviation“减缓,减轻”。 [译文] 杰茜卡每隔一天去一次诊所用热疗法
第21题: [多项选择]可变剪接()。 A. 与“组成型”剪接的机制完全不同 B. 可以从单个基因产生多种同工蛋白,即添加或缺失少数氨基酸的变异蛋白 C. 涉及不同的5′和3′剪接位点 D. 被用于在不同组织,不同的发育阶段产生不同的蛋白质 E. 可以跨越外显子,也可涉及可变外显子或保留内含子 参考答案:B, C, D, E