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The combination mode is also called part-to-whole mode. The combination mode combines objects into a tree structure, which is used to represent the relationship between the whole and the part. The combination mode enables clients to treat individual objects and combined objects equally. For example, in. NET, simple controls such as WinForm controls, TextBox and Label inherit from the Control class, while composite controls such as GroupBox also inherit from the Control class. The specific structure diagram of the combination mode is shown below.一九三五年前后，日本帝国主义加强了对我国的侵略。在民族危机空前严重的关头，蒋介石仍旧坚持“攘外必先安内”政策，张学良将军被迫“剿共”，因在陕北战场上屡遭失败，受到蒋介石的责难，于是急于寻求出路。张学良通过被我军放回的原东北军团长高福源的关系，与我党周恩来同志在延安举行了会谈。张将军决定以民族存亡的大局来说服蒋介石停止内战，一致抗日。与此同时，杨虎城收到了毛主席派人给他送来的亲笔信。一九三六年十二月初，蒋介石亲临西安，下榻于临潼华清池，张学良多次对蒋“苦谏”，均痛遭拒绝。张、杨被迫于一九三六年十二月十二日对蒋实行了“兵谏”，爆发了震惊中外的“西安事变”。“西安事变”和平解决，抗日战争也进入了崭新阶段。如此一来齐国疏于防备，不是正好给了韩信机会吗？若非如此，韩信哪里能这么快长驱直入进入齐国腹地呢？范增轻轻摇头道：这是一种可能，可能性也很大。剧照好一会，只见他缩头回去，在屋内窸窸窣窣捣腾了一番，再轻轻地出来，肩上扛了一团黑乎乎的什么东西，仔细将门掩好，然后一瘸一拐地往溶洞深处走去。She told me that his father was a border guard, and his father told her before his death to continue the border guard anyway.成长于福利学校的少年苏昂（欧豪 饰）与女孩林巧（郭姝彤 饰）相依为命，彼此取暖，然而受尽欺凌与屈辱。当少年一路野蛮成长，蜕变成为电脑天才，坏人也并未变老，于是苏昂开始编织自己的复仇计划。