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【简答题】
野鸭湖国家湿地公园有一种奇异的植物,它能 “ 张嘴 ” 吃掉虫子。这种植物是华北地区唯一的水生食虫植物,名为——狸藻。 ( 1 )狸藻开小黄花,茎上长着由叶片变成的球状捕虫囊,一棵狸藻最多长有 1200 多个小囊,体现狸藻的 与功能相适应。狸藻虽名为“藻”,但在分类上并不属于藻类,而是一种 _____ 植物。 ( 2 ) 狸藻可捕食并消化水中微小生物,也被称为“水体的清道夫”,这体现了生物对环境的 ______ 。 ( 3 )野 鸭湖湿地动植物资源丰富,到目前已经记录到鸟类 303 种,植物 472 种,还有上百种的昆虫与鱼类,使野鸭湖湿地生态系统具有较强的 ______ 能力,但该能力是有一定限度的。
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【单选题】A line of clouds,sharp changes in wind direction,and squalls 暴风are most frequently associated with a(n) ______.
A.
occluded front
B.
warm front
C.
cold front
D.
warm sector
【单选题】After he became Chancellor Hitler had to accept a certain degree of routine. This was against his natural inclination. He hated systematic work, hated any discipline. Administration bored him and he u...
A.
decided not to do any work that he did not like doing
B.
did not like to be controlled in his work
C.
was obliged to work more regularly than he had done before
D.
was forced to work more efficiently and much more quickly
【简答题】Hitler and his men had their hatred towards Jews and color people. Our society is riddled with such hatred based 【S1】______ upon peoples' beliefs and origins and it seems millions are fighting each ot...
【简答题】利用判断矩阵来求各方案的优先权重时，除了要按估计的aij值构造出判断矩阵之外，还要完成哪两样工作？
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