Once there was a man named Chulong in Thailand. One day he saw a beautiful 1 when he was walking in the park. He went near it quietly and caught (抓住) it.

     " 2 do you catch me?" asked the bird.

    "I want to make money," said Chulong.

    "Nobody will 3 me because I'll lose my beauty when I'm not free." Then the beautiful bird turned into a common one.

    Chulong was unhappy.

    The bird said,“ 4 you set me free, I will tell you three simple but useful rules. I'm sure they will 5 you."

    "But how can I trust (相信) 6 ? You may fly away," said Chulong.

    "I won't," said the bird.

    Chulong set the bird free, and it sat in a tree.

    Now tell me the 7 ，said Chulong.

     “OK,” said the bird. "The first rule is never trust everything others say. The second rule is never be unhappy about 8 you don't have. The third rule is never throw away (扔掉） what you have in your hand'

    You silly bird "shouted Chulong ". Everyone knows these three rules. You cheated (欺骗）me.”

    But the bird said,"Chulong， 9 all your actions today. You had me in your hand but you threw me away. You trusted all I said. And you are unhappy about not having me. Although the rules are simple you never 10 them ". After saying this the bird flew away.

由央视自主研发的大型文化节目《中国诗词大会》，用流行方式引导国人传承中华血脉里的文化基因，打造了一场“全民参与的诗词文化盛宴”。央视节目组这样做有利于（    ）

①增强人们对中华民族文化的认同感       ②建设和发展中国特色社会主义文化

③全面继承中华民族的传统文化               ④增强民族自豪感和自信心

如图1是某高等生物在生殖发育过程中细胞内染色体数目的变化曲线，图2表示细胞内核DNA与染色体数目比值的变化关系．请分析回答：

（1）图l中同源染色体分离发生在A过程的　____ （填数字标号）阶段．B过程中④到⑤染色体数目加倍的原因是____ ．

（2）图2中de段变化的原因是____，对应图l中C过程的____ （填数字标号）阶段．

（3）图2若表示减数分裂过程中的相关变化，则ac段对应的时期是____ ，此时细胞中发生的主要变化是____ 

（4）图2若表示有丝分裂过程中的相关变化，则cd段对应的时期是____ ．  在“观察根尖分生组织细胞的有丝分裂”实验中，装片的制作流程为____ ，将装片放在显微镜下观察，视野中处于____ 时期的细胞最多．