【判断题】基因是贮存遗传信息的核酸(DNA或RNA)片段,包括编码RNA和蛋白质的结构基因以及转录调控序列两部分。
【单选题】The best moment for the football star was he scored the winning goal.
【判断题】基因是能够表达和产生基因产物(蛋白质或RNA)的核苷酸序列。包括编码序列、调控序列、内含子和编码区两端两端的非编码序列。
【简答题】路由选择是在OSI模型中的__________层实现的。
【单选题】The football star _____ to answer the reporters' questions.
【简答题】He was (disappoint) ______ to hear that the football star would not play that day.
【单选题】She looked upon the football star as her role model ______ yesterday, when she saw him taken away by the police for drug taking on TV. [ ]
【单选题】()包括DNA疫苗和RNA疫苗,由编码能引起保护性免疫反应的病原体抗原的基因片段和载体构建而成。
【单选题】Fans crowded the airport exit waiting for the football star.
【单选题】The best moment for the football star was _______ he scored the winning goal.