①反映了社会主义核心价值观的理论创新

②拓展了提高公民学科文化素质的渠道

③丰富了道德教育的内容，创新了道德教育的形式

④提供了社会主义核心价值观教育的生动载体

（2015$·$浙江）某自花且闭花授粉植物， 抗病性和茎的高度是独立遗传的性状。 抗病和感病由基因 R 和 r 控制， 抗病为显性； 茎的高度由两对独立遗传的基因（ D 、 d ， E 、 e ） 控制， 同时含有 D 和 E 表现为矮茎， 只含有 D 或 E 表现为中茎， 其他表现为高茎。 现有感病矮茎和抗病高茎两品种的纯合种子， 欲培育纯合的抗病矮茎品种。。

请回答：

（ 1 ） 自然状态下该植物一般都是 _______ 合子。____ 

（ 2 ） 若采用诱变育种， 在γ 射线处理时， 需要处理大量种子， 其原因是基因突变具有 ______和有害性这三个特点。____ 

（ 3 ） 若采用杂交育种， 可通过将上述两个亲本杂交， 在 F₂等分离世代中 _____ 抗病矮茎个体， 再经连续自交等 _____ 手段， 最后得到稳定遗传的抗病矮茎品种。 据此推测， 一般情况下， 控制性状的基因数越多， 其育种过程所需的 _____ 。 若只考虑茎的高度， 亲本杂交所得的 F₁ 在自然状态下繁殖， 则理论上， F₂的表现型及比例为 _______ 。____ 

（ 4 ） 若采用单倍体育种， 该过程涉及的原理有 ____ 。 请用遗传图解表示其过程（说明： 选育结果只需写出所选育品种的基因型、 表现型及其比例）。____ 

南京完全解放国民党反动派宣告灭亡

（新华社南京1949年4月24日5时电）国民党22年反革命中心南京，已于23日午夜为人民解放军解放。国民党反动统治宣告灭亡。人民解放军入城后，受到学生和市民的热烈欢迎，男女学生们纷纷向解放军献花致敬。人民解放军已布告安民，城内秩序稳定，商店照常开门营业。在发起渡江作战后三天内，人民解放军便攻占这一全中国第一个大城，这说明解放军威力的强大，国民党匪军一触即溃，已经无法进行有组织的抵抗。

Dear son,

    The day that you see me old and I am already not in good health, have patience and try to understand me.

    If I get dirty when eating, if I can not dress, have patience and remember the hours I 1 teaching it to you. If, when I speak to you, I 2 the same things thousand and one times, do not 3 me, listen to me. When you were small, I had to read to you thousand and one times the same story 4 you got to sleep. When I do not want to have a 5, neither shame me nor scold me. Remember when I had to chase you with thousand excuses I 6, in order that you wanted to bathe. When you see my 7little about new technologies, give me the necessary time and do not look at me with your mocking (嘲弄) smile. I taught you 8 to do so many things: to eat good, to dress well, to confront life.

    When at some moment I lose the memory or the 9 of our conversation, let me have the necessary time to remember, and if I cannot do it, do not become nervous, as the most important thing is not our conversation but surely to be with you and to have you 10 to me.

    If ever I do not want to eat, do not force me. I know well 11 I need to and when not. When my 12 legs do not allow me to walk, give me your 13, the same way I did when you gave your first 14. And when someday I say to you that I do not want to 15 any more—that I want to rest forever, do not get angry. Someday you will understand.

    Try to understand that my age is not lived but survived. Some day you will discover that, 16 my mistakes, I always wanted the 17 thing for you and that I tried to prepare the way for you. You must not feel sad, or angry for seeing me 18 you. You must be next to me, try to understand me and to help me as I did it when you 19 living. Help me to walk, help me to end my way with love and 20. I will pay you by a smile and by the immense love I have had always for you.

    I love you, son.

Your father