2023年中小学生科普知识竞赛精选题库及答案(共90题)

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conferences, learned superiors policies; reports, you can learn to deal with problems, art, just wanted to learn, to learn at any time. To continuously expand the scope of the study. The complexity and comprehensiveness of our work, decided to not only do we want to be "professionals", or if "generalists", to dabble in different areas of knowledge. Mastery of knowledge not only to have knowledge to rational analysis. This on requirements we, not only to learning national of route, and approach, and policy, also to learning national of legal, and regulations; not only to with political theory armed mind, also to with economic theory guide work; not only to read history, also to read history; not only to absorption SM of mirror, also to gets is of road; not only to from local learn, also to to outside learn; not only to to books learn, also to field study learn.   Therefore, I would encourage you, and more to the outside world when I have time to take a look at, take a stroll, outside developments, learn other people's development approach, and then come back to guide our work. Second, we must think. "Learning without thought to overshadow, thinking without learning is perilous." We want to foster the character of advancing with the times, forge ahead, often reflect themselves in adapting to the new situation on whether there are delays, have anything to fear in the reform and innovation, whether in terms of accelerating the development of a relaxation, keep promising State of mind. In order to do investigations, investigations is the road to heaven, God disposes of the base. To wants to real heard truth, and justice to truth, and get truth, received effectiveness, on must in-depth actual, and outreach, and in-depth masses, worship masses for Division, and masses heart, with masses with discussion everyone care of problem, listening they of calls, understand they of mood, feel they of suffering, summary they of experience, concentrated they of wisdom, especially on masses most hope, and most urgent, and most worries, and most complained of hot, and difficulties and focus problem, more to active research, caught not put. Dare to innovate, in our work, often remain "the old way doesn't work, the new approach would not" situation, the reason, the key is that many people know that copying other people's ideas, mechanically, using someone else's old ways. To change this predicament, requires us to break the shackles of traditional concepts to overcome conservative, conformist, good at finding new problems and to accept new things, summarize new experience, new ideas, developing new programmes and Maverick, a new approach to solve problems, speed up development. Especially in implement superior policy spirit of process in the, both implementation, and cannot mechanically, to to extraordinary of courage and develop enterprising of spirit, put flexibility and principle combined up, put superior of spirit and local reality combined up, Yong conspiracy to breakthrough of policy, and exercise innovation of lift, developed out development works of, and grass-roots welcomes of, and 2023年中小学生科普知识竞赛精选题库及答案(共90题) 1、人的一生大约要喝多少吨水?(80吨)。 2、一个水龙头滴水,15分钟就滴水200毫升,每天有近20升水,一年就会浪费多少吨水?(7吨) 3、举例说出发电的几种方法?(火力发电、水力发电、风力发电) 4、环境保护法的原则是什么?(预防为主、防治结合原则;污染者负担原则;环境权利原则;协调发展原则;公众参与原则;可持续发展原则) 5、白头叶猴属于我国哪一级保护动物?(一级) 6、请说出造成1998年长江流域洪涝灾害的原因。(是“天灾”和“人祸”共同作用的结果。天灾直接原因是气候异常,雨量过大;人祸原因主要有三个方面:第一,破坏地表植被,水土流失严重。第二,江河湖泊的不断减少,进一步降低了蓄洪泄洪能力。第三,必要的防洪措施跟不上,城市防洪标准偏低) 7、1980至1995年间,全世界森林面积减少了多少?(1.8亿公顷) 8、水资源短缺成为我国城市发展面临的重大问题,据统计,目前我国已有300多个城市缺水,每年我国因缺水而造成的经济损失有多少?因水污染而造成的经济损失有多少?(100多亿元,400多亿元) 9、淡水资源占地球水资源的百分比是多少?(3%) 10、目前我国受污染的河流的比例达到多少?(90%) 11、随着人口的增加,水资源已经成为一个世界性的问题,当今世界人均供水量已经比25年前减少了1/3,请问,如今世界的缺水现象已经影响到多少个国家?(80个国家) 12、汞、镉、铬、铅、砷是一类污染物,对人体危害很大,被称为“五毒”。这些污染物随废水进入水体后,被浮游生物吸收,小鱼吃浮游生物,大鱼又吃小鱼,人又吃污染后的鱼类,污染物会逐渐的聚集到人体内,我们称这样的关系为什么?(食物链污染) 13、据科学家们观测,全球气候在逐渐变暖,造成气候变暖的主要原因是什么?(人类生产活动所排放大量的二氧化碳) 14、如果缺少什么?地球上所有生物将会全部灭绝,人类也不例外?(空气和水) 15、一氧化碳气体对人体有什么危害?(人体是靠血液中的血红蛋白携带氧气到各个组织和器官,在吸入无色无味的一氧化碳后,它会进入人体的血液,一氧化碳和血红蛋白结合的能力要比氧气强250倍,它很快抢占血液中氧气同血红蛋白结合的位置,造成大脑和躯体缺氧,短时间内可致人死亡) 16、烟尘是大气中的固体颗粒物,直径很小,其中小于10微米的可以长期在空气中飘浮,叫什么?大于10微米的,能较快地降落地面上,叫什么?(飘尘、降尘) 17、上世纪九十年代,由于大气污染严重,我国北方有一座城市被烟尘遮盖了城市上空,在卫星拍摄中失去了踪迹。这座城市的名称叫做什么?(本溪市) 18、每年的“世界环境日”是哪一天?(6月5日) 19、污染者负担原则是什么?(谁污染谁治理,谁开发谁保护) 20、我国七大水系都受到不同程度的污染,请你按污染的严重程度顺序排列(依次是:辽河、海河、淮河、黄河、松花江、珠江、长江) 21、每年我国产生多少垃圾?(8000多万吨)并且每年以多少速度在增长?(10%) 22、垃圾有什么危害?(1、污染土壤、地下水、大气等,影响城市环境和居民生活条件;2、占用宝贵的土地资源。) 23、1952年12月发生了震惊世界的英国伦敦烟雾事件,两个月内造成1.2万多人死亡,请问造成伦敦烟雾事件的原因是什么?(燃煤产生的废气污染) 24、在离南极最近南美洲的海伦娜岬角,在那里,几乎所有的动物都是瞎子:如羊会得白内障变成盲羊,猎人随手可拎起一只瞎了眼的野兔回家享口福,天上飞的野鸟因视力不好,辨不清方向而误闯百姓家里,就连河里的鱼也是盲鱼,许多在这里居住的人得了皮肤癌、白内障等疾病,植物生产缓慢,农作物减产,请问。这是为什么?(这一地区的上空臭氧层遭到严重破坏,太阳紫外线过强所造成的) 25、臭氧层离地面有多高?(20—30公里) 26、臭氧层被破坏的主要原因是什么?(人类使用的化学材料如氟里昂等挥发到空气作用的结果) 27、每年的国际臭氧层日是那一天?(9月16日) 28、过多的紫外线伤害会导致什么疾病发病率最高?(角膜炎、白内障) 29、12亿人口是多少?不妨给出一些形象的说法:如果中国人手拉手站在地球的赤道,可以绕地球多少圈?(50圈);全国人民一天吃掉多少万吨粮食?(78万吨);多少万吨肉?(4万吨)。 30、现代家庭居室中存在什么污染?(人体污染,
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