根据课文《乡下人家 》内容填空。

作者通过对动植物_____化的描写来表达自己的感情。

玉米是遗传学常用的实验材料．请回答相关问题：

（1）玉米基因图谱已经绘出，这一成果将有助于科学家们改良玉米的品种．作物基因图谱主要研究基因的定位，以及基因中____ 的排列顺序．

（2）玉米的常态叶与皱叶是一对相对性状．农田中有一批常态叶和皱叶玉米的幼苗，欲通过实验判断该对相对性状的显隐性．某同学的思路是随机选取等量常态叶与皱叶玉米幼苗各若干分别移栽隔离种植，观察子一代性状．若子一代发生性状分离，则此亲本所表现的性状为____ 性状．若子一代未发生性状分离则需要____ ．

（3）玉米的单倍体幼苗经秋水仙素处理后形成二倍体植株．如图是该过程中某时段细胞核DNA含量变化示意图，秋水仙素发挥作用的时期是____，e～f段细胞中含有的染色体组数是____ ．

词汇运用 。根据句子意思，用括号中所给汉语提示或英语单词的适当形式填空。(每空一词)

1.The poster says more than one____ will attend the presentation. (导演)
2.She had been very successful before ____  the film industry. (进入)
3.Who do you think thought of that____ ending of the story? (令人惊讶的)
4.We all know that he is always trying to do things____ . (不同地)
5.The teachers often tell us not to do anything ____ the law. (反对)
6.Audrey Hepburn is considered as one of Hollywood’s all-time ____ actresses. (great)
7.My parents often remind me of the road____on my way to school every day. (safe)
8.How do you like the film____  on the novel of Mo Yan? (base)
9.It's said that young man went abroad for further education alone in his____ (20)
10.We are not sure whether the victim was killed or he killed____ .(he)