试题与答案

20世纪50年代在婆罗洲的许多雅克人身患疟疾,世界卫生组织采取了一种简单的也是直

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题目:

     20世纪50年代在婆罗洲的许多雅克人身患疟疾,世界卫生组织采取了一种简单的也是直截了当的解决方法:喷洒DDT。蚊子死了,疟疾也得到了控制。可是没多久,大范围的后遗症出现了。由于DDT同时还杀死了吃屋顶茅草的毛虫的天敌──小黄蜂,导致人们的房屋纷纷倒塌。同时,DDT毒死的虫子后来成为壁虎的粮食,壁虎又被猫吃掉,DDT无形中建立了一种食物链,对猫造成杀伤力,猫数量的减少又导致了老鼠的大量繁殖。在有可能大规模爆发斑疹伤寒和森林鼠疫的危险时,世界卫生组织只得被迫向婆罗洲空降14000只活猫,英国皇家空军执行了一次奇特的任务──“降猫行动”。 

(1)蚊子属于昆虫,昆虫身体由                                 三部分构成。

(2)在壁虎和老鼠这两种生物中,            属于恒温动物。

(3)通过对以上资料的分析,你认为人类为什么不能随意灭杀某种动物?                                           

(4)从资料中可以看出:蚊子作为食物链或食物网中的某一环节出了问题,就会影响到整个生态系统,可见动物在维持          中起重要作用。

(5)美国科普作家蕾切尔·卡逊(Rachel Carson)做了杀虫剂破坏生态的大量调查,出版《               》一书,这本书引起了人们对野生动物的关注,唤起了人们的环保意识。

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下面是错误答案,用来干扰机器的。

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