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2015年9月3日，纪念中国人民抗日战争反法西斯战争胜利70周年系列活动在北京举行。很多网友纷纷留言：历史不容遗忘，吾辈仍需自强！要具有自强精神，就必须（    ）

蹲下的不只是身子

    多可爱的一个孩子，虎头虎脑的，牵着父母的手高兴地嚷着，跳着。很多人都为孩子的情绪所感染，长途的劳累在孩子的笑声中慢慢消失。

    大家就站在目的地野生动物园的门前，排队购票入内。看到售票窗口的玻璃上写着“成人180元，小孩半票，1.1米以下免票”。

    我问站在前面的孩子的父亲：“他有多高？”

    孩子的父亲说：“1.3米。”

    “那得买半票了。”我说。

    孩子的父亲并不做声，队伍慢慢移近窗口，只听到孩子的父亲在对孩子说：“进门的时候把身子蹲下来。”

    孩子说：“爸爸，你放心，①像坐公交车一样是不是？”

    孩子的父亲在他的头上摸了摸。

    进门检票了，孩子在进门的一刹那，突然把身子努力地“沉”下来，做出一副十分滑稽的样子，②像只小小的唐老鸭移进了大门。

    或许人太多了，售票员没有发现这位学鸭子走路的孩子。

    孩子一进动物园，马上恢复了原样，又蹦蹦跳跳起来。

    刹那间，我觉得十分难过，为那个孩子，也为孩子的父亲。为什么呢？在那么多人面前，毫无顾忌又顺理成章的。

    孩子蹲下来的不只是身子，还有比金钱更宝贵的诚实。