There was a man who had four sons. He hoped his sons could learn not to judge things too quickly. So he gave them a task in turn,____ (ask) them to go to see a pear tree at a distance____(separate).

    The first son set out in winter, the second in spring, the third in summer, and the____young)in autumn.

    When all of them returned home, they were called together____(describe) what they had seen. The first son complained the tree was____ (bend) and ugly. The second son said the tree was covered with buds(花蕾)and full of hope. The third son said it was full of flowers____smelled so sweet and that he had____seen such beautiful scenery. The last son disagreed____all or them, saying it was filled with fruits, full of life and content.

    The man told his four sons that they were all correct, but they only saw the tree in____season, He taught them that the value of a person could only be measure when all the seasons were over.

    If you give up in winter, you____(miss) the hope of spring, the beauty of summer, and the harvest of autumn in your life.

甲图表示动植物的生命历程，乙图表示细胞增殖过程中不同时期每条染色体上DNA含量的变化．请据图回答问题

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      舜发于畎亩之中，傅说举于版筑之间，胶鬲举于鱼盐之中，管夷吾举于士，孙叔敖举于海，百里奚举于市，故天将降大任于是人也，必先苦其心志，劳其筋骨，饿其体肤，空乏其身，行佛乱其所为，所以动心忍性，曾益其所不能。

      人恒过然后能改，困于心衡于虑而后作，征于色发于声而后喻。入则无法家拂士，出则无敌国外患者，国恒亡，然后知生于忧患而死于安乐也。