【简答题】完形填空。 Helen is my sister. She likes hamburgers very much. 1 breakfast she has hamburgers and some milk. But I don't have hamburgers. After (在……后) 2 she and I go to school. We have 3 at school. She has...
【单选题】Eachadvertisement is doing its utmost to influence our _____buying decisions, fromthe breakf ast c ereal we eat to whichcruise line we will use for our vacation.
【单选题】对下列示意图所表示的生物学意义的描述,错误的是 ①甲图中生物自交后产生基因型为Aadd的个体的概率为1/8 ②乙图细胞一定是处于有丝分裂后期,该生物正常体细胞的染色体数为4条 ③丙图所示家系中男性患者明显多于女性患者,该病最有可能是伴X隐性遗传病 ④丁表示雄果蝇染色体组成图,其基因型可表示为AaX w Y [ ]