题目

将下列句子变为间接引语 1．Mr.Wang said，“I will leave for Shanghai on business next month, children.” ________________________________________________________________________ 2．“I haven't heard from my parents these days，”said Mary. ________________________________________________________________________ 3．She said，“Light travels much faster than sound.” ________________________________________________________________________ 4．Zhang Hong said to me，“Doctor Wang passed away in 1948.” _________________________________________________________________ 有关遗传变异的下列四种说法，请你判断 ①基因型为Dd的豌豆在进行减数分裂时，会产生雌雄两种配子，其数量比接近1∶1 ②基因自由组合定律的实质是，Fl产生配子时，等位基因分离，非等位基因自由组合 ③将基因型为Aabb的玉米花粉授到基因型为aaBb的玉米植株上，所结子粒胚的基因型是：AaBb、Aabb、aaBb、aabb ④染色体中DNA的脱氧核苷酸序列、种类、数量，三者中有一个发生改变，就会引起染色体变异 [　　] A．四种都对 B．四种都不对 C．至少有一种对 D．有一种不对