题目

– She _________. Please be quiet! – What? It’s seven a.m. I ______ for an hour.A. has just fallen asleep; have got up B. has just slept; have got upC. has just fallen asleep; have been up D. has just been asleep; have been up. 答案：【答案】C【解析】句意：——她刚刚睡着了，请安静！——什么？现在是上午7点，我刚起床一个小时。get up起床，短暂性动词不能和时间段连用，所以排除A/B；fall asleep睡着，强调入睡的动作；be asleep睡着，强调睡着的状态，根据just可知是指动作；故选C遗传规律在哪种生物中不起作用？(    ) A．人类              B．玉米 C．蓝藻              D．大豆