植物资源论文题目大全高中英语版
1]胡永红,黄卫昌 美国植物园的特点──兼谈对上海植物园发展的启示[J] 中国园林,2001,(4) [2]鲍滨福,马军山 两“园”合一 学用并举——浙江林学院植物园规划设计探索[J] 中国园林,2006,(5) [3]李春娇,董丽 试论植物园专类区规划[J] 广东园林,2007,(2) [4]李惠卓,张彦广,吴杨哲,张亮,陈莉瑶,姬鹏,崔容华 保定市植物园土壤特性研究[J] 河北农业大学学报,2004,(4) [5]林昌虎,孙超 加强科普教育建设 扩大植物园生存空间[A] 张治明中国林业出版社[C]: 中国林业出版社,2001: [6]郑金贵 校园多功能教学基地“中华名特优植物园”的建设[J] 福建农林大学学报(哲学社会科学版),2009,(3) [7]胡文芳 人工与自然的科学结合——体验巴塞罗那植物园[J] 中国园林,2005,(3) [8]周练 基于生态休闲文化的南亚热带植物园规划研究[D] 中南林业科技大学: 中南林业科技大学, [9]陈艺芬 论植物园在生物教学中的运用[J] 柳州师专学报,2009,(6) [10]厦门植物园万石阁设计方案[J] 建筑与文化,2008,(3) [11]黄远钧,黄惠明 对园林围墙与园路进行设计与施工的分析[J] 科学之友,2010,(6) [12]张和山 浅谈影响园林绿化施工质量的因素及解决对策[J] 科学之友,2010,(10) [13]李永红,杨倩 杭州西溪湿地植物园——基于有机更新和生态修复的设计[J] 中国园林,2010,(7) [14]郭鸿英,孙超,储蓉 植物园数字化建设[J] 资源开发与市场,2004,(4) [15]孟宪民 沈阳植物园的现状分析及同北京植物园的比较[D] 北京林业大学: 北京林业大学, [16]唐宇丹,靳晓白 植物园的外来种引种和生物安全[A] 张治明中国林业出版社[C]: 中国林业出版社,2001: [17]张晓芹 枸杞在园林中的应用及栽培管理技术[J] 河北农业科学,2007,(2) [18]遆卫国,王晶晶 喷泉在园林造景中的应用[J] 农业科技与信息(现代园林),2007,(7) [19]杨庆绪,蒋三登,张运德,刘毓 园林建设志在环境友好 绿化发展重在资源节约[J] 农业科技与信息(现代园林),2007,(7) [20]尉秋实,李爱德 植物保护、科研、开发三项功能建设的思路与对策[A] 张治明中国林业出版社[C]: 中国林业出版社,2001: [21]Mauro Ballero,Giovanni Piu,Alberto A The impact of the botanical gardens on theaeroplankton of the city of Cagliari, Italy[J] 2000,(1) [22]韦标 试论园林绿化工程施工与养护管理[J] 科学之友,2011,(6) [23]吴徳智 浅谈园林绿化施工中如何提高植树成活率[J] 科学之友,2010,(10) [24]胡永红 专类园在植物园中的地位和作用及对上海辰山植物园专类园设置的启示[J] 中国园林,2006,(7) [25]郦文俊 园林景观栽植中的植物色彩设计研究[J] 农业科技与信息(现代园林),2008,(2) [26]麻广睿 植物园发展与更新规划[D] 北京林业大学: 北京林业大学, [27]金晓雯 园林建筑小品人性化研究[D] 南京林业大学: 南京林业大学, [28]Alessandro Travaglini,Diletta Ravaziol,Maria Grilli C A meteorological station and a pollen trap at the botanical garden and arboretum of the university of Rome Tor Vergata[J] 2000,(2) [29]D Boguslaw Molski,Roman Kubiczek,Jerzy P Rye genetic resources evaluation in the Botanical Garden of the Polish Academy of Sciences in Warsaw[J] 1981,(1) [30]G V Kovaleva,T G Dobrovol’skaya,A V G The structure of bacterial communities in natural and anthropogenic brown forest soils of the Botanical Garden on Murav’eva-Amurskogo Peninsula[J] 2007,(5) [31]Giuseppe V The Popularization of Mycology within the Botanical Garden of Palermo[Z] :1994, [32]李忠实 加强园林施工质量管理浅谈[J] China's Foreign Trade,2011,(12) [33]何勇军 浅谈园林施工过程中的成本控制[J] 科学之友,2010,(6) [34]肖振甲,宋国祥 浅谈园林驳岸工程施工现场管理[J] 科学之友,2010,(14) [35]朱丹粤 浅谈如何做好园林绿化工程施工项目成本管理[J] 华东森林经理,2007,(2) [36]齐海鹰,安吉磊 浅谈观赏草在园林造景中的应用[J] 农业科技与信息(现代园林),2007,(7) [37]郭丹 园林绿化工程造价浅谈[J] 广东园林,2007,(6) [38]计桂珍 浅述避暑山庄的园林艺术[J] 承德职业学院学报,2005,(4) [39]Metal bioaccumulation in plant leaves from an industrious area and the Botanical Garden in Beijing[J] Journal of Environmental Sciences,2005,(2) [40]N Rascio,A Camani,L Sacchetti,I Moro,G Cassina,F Torres,E M Cappelletti,M G P Acclimatization trials of someSolanum species from Amazonas Venezuela at the botanical garden of Padova[J] 2002,(4) [41]Irena M Oles Shevchenko et al in the Botanical Gardens[Z] :1989, [42]A Alfani,G Bartoli,R S Sulphur contamination of soil and Laurus nobilis L leaves in the botanical garden of Naples University[Z] :1983, [43]邵丹锦 一个永续发展的热带风情植物园——新加坡植物园[J] 中国园林,2011,(3) [44]肖春芬,彭艳琼,杨大荣 植物园在物种迁地保护中的作用——以西双版纳热带植物园榕树和榕小蜂的保护为例[J] 中国园林,2010,(5) [45]任康丽 植物园景观设计功能性与艺术性的高度结合——从美国费尔柴尔德热带植物园看景观设计的组构[J] 中国园林,2010,(9) [46]李忠超,陈红锋 我国植物园新时期科学普及工作的思考——以中国科学院华南植物园为例[J] 福建林业科技,2006,(3) [47]欧阳欢,王庆煌,黄根深,龙宇宙,宋应辉 科研、开发、旅游三位一体新型植物园的创建——以兴隆热带植物园为例[J] 中国生态农业学报,2007,(4) [48]孟宪民 国外植物园发展现状及对我国植物园建设的启示[J] 世界林业研究,2004,(5) [49]任海,简曙光,张征,郑祥慈,张奠湘,王峥峰,郝刚,段俊,廖景平,魏孝义,傅德志 数字化植物园的理论与技术思考—以华南植物园为例[J] 热带亚热带植物学报,2004,(5) [50]林有润 植物园,“植物系统与工程学”科学研究与实验的基地———兼论《巨系统》理论对植物园建设及对植物科学研究工作的指导意义[J] 植物研究,1998,(4)
研究植物资源的意义论?HHI I
植物资源论文题目大全初中英语版
Today, daddy leads me to buy the flower to the flower shop, I elected three to plant flowers: Fresh refined lily, warm moving carnation, what I most like is that posture myriad In the flower shop rose has many kind of colors: The white like snow, the red elephant fire, yellow resembles the gold, flesh color like rosy cloud I have chosen a most lovable purple-red Gets in the home, I insert them in have in the water jar, sits before the table the careful observation Rose's stem very straight very straight, has the penstock to be so thick, on is also bringing several The bottle green leaf is the Chinese olive shape, also soft is also thin, the edge becomes the zigzag, the arteries is the forked It is an opening flower bud, the desire in bud puts it is similar to the charming charming young girl, the smiling face contains the spring, beautiful The second day early in the morning, I discovered the rose already split open the smiling face, a flowers small wine class, the flower petal slightly has become likely screw type splits open, but has not looked at the inside stamen and The rose seems beautiful and the rich charm, I draw close to it gently, inspired deeply! A light delicate fragrance greets the The rose is the rose family plant, its ancestor is an everflowering rose, afterward was mixed with the wild rose, has become present's Although the rose is bringing the thorn, but my equally I like tenderly and beautifully pleasant, fragrant four overflow 翻译为今天,爸爸让我买花花店,我选三种花:清新雅致的莉莉,温暖的移动的康乃馨,我最喜欢的是姿态万千玫瑰。在花店的玫瑰有许多种颜色:白如雪,红象火,黄的像金的,粉红的喜欢美丽的云……我选择了一个最可爱的深紫到红的玫瑰。会在家里,我插入他们的水罐,坐在桌前仔细观察玫瑰。玫瑰的干得很直很直,有缝隙,那么厚,是几spinules也带来。这个瓶子绿色的叶子是中国橄榄形,也软也是薄、边缘变得锯齿,动脉是动脉分叉。这是一个开放的花芽的渴望,在芽期把它与迷人的迷人的年轻女孩,笑脸包含了春天,美丽的极。第二天一早,我发现玫瑰已绽开了笑脸,一个花小酒杯、花瓣略有有可能成为螺杆式分割开,可是没有看着里面stamen和雌蕊。玫瑰看起来漂亮和富有魅力,我轻轻贴近,深深地吸气!一个光迎鼻孔清香。玫瑰是蔷薇科植物,其祖先是一个everflowering玫瑰,后来都掺杂着野玫瑰,已经成为现在的玫瑰。虽然带着刺的玫瑰,但我同样我喜欢温柔而美丽宜人,芳香四溢的溢出玫瑰。
Changing climate and the phenological response of great tit and collared flycatcher populations in floodplain forest ecosystems in Central EAbstractThis study is based on 47 years of observations (1961-2007) on two common bird species, the Great Tit (Parus major) and the Collared Flycatcher (Ficedula albicollis), and a dominant tree species in their habitat, the English Oak (Quercus robur) The study took place at four research sites in the Czech Republic located in full-grown, multi-aged floodplain forests with no forestry An increase in air temperature over the evaluated period clearly influenced the length of phenological The full foliage date of English Oak has advanced by 7 days during the past 47 Great Tit and Collared Flycatcher populations have reacted to the changing climate in the same way, with first laying date and mean laying date advancing by between 0 and 0 In all cases, the trends are highly significant and consistent over all Despite the ongoing shift in phenological stages toward the beginning of the year, the change does not appear to have led to mistiming in the trophic food Overall, this study shows almost identical rates of change in egg laying dates for both bird species in all the floodplain forests studied, and these trends are coherent with those of English Oak and peak herbivorous caterpillar KEYWORDSclimate change • Europe • growing season • meta analysis • phenology • season • temperature response • trend
植物是最重要的 生物。 没有植物,生活不能继续。 这是因为植物能利用空气、水和日光形成食物动物从吃植物和动物获取他们的食物,而且很快,因此动物和人需要植物为了要生存。 这是我们为什么发现在我们周围的有这么多植物。
Carnation; PeanutThe Fairy of Nature, Our Mutual FriendBicycle, Underground
植物资源论文题目大全高中英语
离子通道的研究进展 全球变暖与植物光合作用、二氧化碳的关系 植物气孔开关的机理二氧化碳施肥的应用无土栽培的发展与应用
1 ①谈“当地”(学生所在的地方)休闲农业的现状和发展 2 ②谈儿童活动区的规划要求 3 ③探讨“生态”在公园规划中的体现 4 ④谈园林景观中的休闲空间及应用 5 ①居住区景观设计探讨 6 ②公园景观设计探讨 7 ③广场景观设计探讨 8 ④小区水体景观生态设计方法探索 9 ①水生花卉及其在园林造景中的应用 10 ②~~(省/市/县)花卉产业现状及发展方向 11 ③~~(花卉)组织培养繁殖技术研究 12 ④~~切花采后生理及保鲜技术 13 ①城市道路绿化景观分析研究 14 ②开放性公园规划设计初探 15 ③匾额、楹联在园林中的应用 16 ④观光农业园发展初探 17 ①城市景观大道植物造景 18 ②居住社区植物造景 19 ①~~(城市)色叶植物资源调查 20 ②~~(城市)行道树资源调查 21 ①高校校园规划设计 22 ②居住区景观规划设计 23 ③公园规划设计 24 ①乡村旅游(景观)探讨 25 ②观光农业(景观)探讨 26 ③浅析XXX校园景观 27 ④浅析XXX城市景观 28 ①~~小区园林规划设计 29 ②~~社区公园规划设计 30 ③~~工厂核心区园林规划设计 31 ①滨水景观设计 32 ②城市公园规划设计 33 ③乡村景观保护与规划 34 ④公共绿地可达性调查研究 35 ①浅谈住宅小区景观的色彩设计与应用 36 ②园林景观设计中水景的营造手法 37 ③园林景观设计中小品的表现手法和作用 38 ④园林景观设计中铺装材料调查 39 城市道路绿化景观设计研究 40 关于城市广场人性化设计方法的思考 41 城市广场植物景观设计方法研究 42 关于城市广场铺装设计方法的思考 43 居住区植物景观设计方法研究 44 城市步行街景观设计方法的研究45 城市滨水景观设计方法的思考 46 山地城市中地形设计方法的研究西南大学网络与继续教育学院2013年春 园艺专业毕业论文题目1 当地果树生产现状及对策 2 当地蔬菜产业现状调查及对策 3 设施栽培效益分析 4 节水灌溉系统的建设及管理 5 园艺作物节水灌溉效益分析 6 “某一种”蔬菜产销体系的调查研究 7 当地蔬菜生产模式现状与对策 8 当地食用菌产业发展方向与新技术推广的研究 9 当地蚜虫危害园艺作物的种类及消长规律研究 10 当地农业杂草种类的调查及防治方法研究 11 当地蔬菜生产与营销现状及对策 12 品牌在蔬菜产业可持续发展中的作用研究 13 无公害蔬菜生产中农药污染问题的调查研究 14 蔬菜标准化生产的实践与思考 15 我国蔬菜种子产业发展现状 16 绿色食品蔬菜生产中的问题及对策 17 蔬菜新品种引种比较试验 18 果树苗木繁殖技术研究(以当地你感兴趣的某一种果树为材料) 19 xx地区果树产业现状及发展策略研究(以某市或者某县的果树产业为研究对象) 20 果树病虫害防治研究(以当地一种果树的某种病害或者虫害为研究对象) 21 xx地区水果行情调查分析(以某市或者某县的水果行情为研究对象) 22 某种蔬菜作物的繁殖技术研究 23 某种蔬菜作物的病虫害防治技术研究 24 当地蔬菜生产存在的问题及对策建议 25 当地特色蔬菜的开发与利用 26 植物激素在果树生产上的应用 27 植物激素在蔬菜生产上的应用 28 植物激素在花卉生产上的应用
专科相对好写。。。不知你是做设计还是要只写论文可以写你们地区某个公园的植物景观设计分析、某小区的植物景观设计、老城区或商业区的植物设计 也可以写一些特殊区域的,比如 工厂、矿区或者医院,这些地方在做植物设计的时候都有额外的要求。
植物资源论文题目大全初中英语
在针叶树的线粒体基因组与其他植物相比,一个古老的微卫星热点演化
第一篇Hi,I’m I'm 13 years old and I study in xxx Middle S My school is Every morning I get up at seven and have And then I go to school at half past Lessons begin at eight o’ We have four lessons in the morning and Chinese is my favourite We usually have 10 minute's break between two lessons and at about 12 o'clock we finish our morning I have lunch at school at twelve I like school lunch and I always have rice with meat and After lunch I often talk with my friends or play basketball with In the afternoon lessons start at half past one and finish at four o’ I play games after school with my friends and then go home at half past In the evening I do my homework and then watch TV At ten o’clock I go to It’s really a busy day but I like 第二篇 As we can see, the world population is growing rapidly day by So enough fresh water is needed to feed such a big What's more, with the development of industry, factories and vehicles produce poisonous gases or wastes, which consequently results in the pollution of Though fresh, a good amount of it can no longer be Only quite limited fresh water resource is available to human So it's high time for us human beings to take quick action to protect water Stop pollution and save water, otherwise, we cannot survive on the With fresh water, the world will be prosperous第三篇 保护水资源: As we can see, the world population is growing rapidly day by So enough fresh water is needed to feed such a big What's more, with the development of industry, factories and vehicles produce poisonous gases or wastes, which consequently results in the pollution of Though fresh, a good amount of it can no longer be Only quite limited fresh water resource is available to human So it's high time for us human beings to take quick action to protect water Stop pollution and save water, otherwise, we cannot survive on the With fresh water, the world will be 翻译如下:正如大家看到世界人口增长迅速日。 给这类大的人口需要有足够的淡水。 怎么还有与工业事务局研究工厂和车辆产生有毒气体或,因此导致污染的水的废物。 虽然新鲜的可以不再使用好的量。 只有很有限的新鲜水资源可供人类。 因此,它是我们人类采取快速行动,保护水资源的时候了。 停止污染和保存水,否则,我们不能生存在地球上。 新鲜的水世界将会繁荣。改革开放:It has been thirty years since China started reform and began a policy of opening up China to the outside This has resulted in great changes taking place in various With the nine-year compulsory education(九年制义务教育) program,all children have the chance to be In the past 30 years,China has made great progress in science and In 2003,China launched its first manned spaceship and fulfilled its first space walk in As economy is developing fast,people's living conditions have greatly In addition,there have also been great changes in The 29th Olympics were successfully hosted in Beijing and Chinese athletes won the most gold I'm really proud of the great achievements in the past 30 It is the leadership of the Communist Party and the great efforts of us Chinese people that made all these Nowadays,people are working hard towards a more advanced and harmonious I'm sure China will have a brighter future and Chinese people will live a happier 第四篇保护水资源: As we can see, the world population is growing rapidly day by So enough fresh water is needed to feed such a big What's more, with the development of industry, factories and vehicles produce poisonous gases or wastes, which consequently results in the pollution of Though fresh, a good amount of it can no longer be Only quite limited fresh water resource is available to human So it's high time for us human beings to take quick action to protect water Stop pollution and save water, otherwise, we cannot survive on the With fresh water, the world will be 翻译如下:正如大家看到世界人口增长迅速日。 给这类大的人口需要有足够的淡水。 怎么还有与工业事务局研究工厂和车辆产生有毒气体或,因此导致污染的水的废物。 虽然新鲜的可以不再使用好的量。 只有很有限的新鲜水资源可供人类。 因此,它是我们人类采取快速行动,保护水资源的时候了。 停止污染和保存水,否则,我们不能生存在地球上。 新鲜的水世界将会繁荣。改革开放:It has been thirty years since China started reform and began a policy of opening up China to the outside This has resulted in great changes taking place in various With the nine-year compulsory education(九年制义务教育) program,all children have the chance to be In the past 30 years,China has made great progress in science and In 2003,China launched its first manned spaceship and fulfilled its first space walk in As economy is developing fast,people's living conditions have greatly In addition,there have also been great changes in The 29th Olympics were successfully hosted in Beijing and Chinese athletes won the most gold I'm really proud of the great achievements in the past 30 It is the leadership of the Communist Party and the great efforts of us Chinese people that made all these Nowadays,people are working hard towards a more advanced and harmonious I'm sure China will have a brighter future and Chinese people will live a happier 翻译如下:这是三十年以来中国开始改革与开始的外部 This 中国开放政策,导致在各个领域发生的巨大变化。 于九年强制 education(九年制义务教育) 程序所有孩子都有机会被 In 在 30 年中国已取得很大进展科技 In 2003、 中国推出其第一次的载人的飞船和完成首次空间行走在 As 经济发展迅速、 人民生活条件大大改善。 此外,也有很大的变化在 The 29 奥运成功承载在北京和中国运动员赢得最大的金牌。 我的确感到自豪的丰功伟绩在过去的 30 It 是共产党的领导和我们中国人作出所有这些 Nowadays,people 正在努力向更先进,和谐 I 确信中国将会有一个光明的前景和中国人民将过幸福生活的努力。电脑利弊:The main disadvantages are: some of the young people are too obsessed with the network control poor, it will trap into the Relevant data show that young people indulge in network performance is more than 89 percent Online games will have a strong young vanity has led to some young people have an unhealthy psychological, severely hampered the normal development of young There are fighting games so that some young people think that real life can be like a virtual network of the world as ruled by the law of the jungle to the world today, leading toward the path of Play the role of those villains, so that boys like girls change, but it's like boys The trap of the second network, some people because of social discontent, the network's own desire to radiation, leading to others on the network by fraud, deceived many examples, list goes Many benefits, save time and effort before the provincial lesson entirely on hand-written, time-consuming and laborious, much more will have to Preparation of a computer is now "semi-automatic", and the school to teach all the prior knowledge input into the computer, after layout, modify, save, and finally print it out; the same can also copy the Computer is time-saving, labor-saving good helper, it gives me more time to study materials, the design of better teaching 第五篇I like badminton and basketball,basketball is my favourite sport,I like basketball I always wear a T-shirt,shorts and runners to play I can throw the basketball in the net, I think it is easy, but someone think it is hard, I can catch the basketball, On Sundays,I am a bbasketball I like to watch basketball game on TV, Yao Ming is my favourite basketball player, I want to be a real basketball player 第六篇Hello everyone !DO you like sports? Let me tell you whate my favorite sport Well I like tennis Becase of playing tennis makes me be healthy and You can run on the playgrond and enjoy it every So I really like playing tennis very mnch! 第七篇a meaningfull activity Last month I went to the hometown with my family,We decided to swim in the river where my father often swim when he was But when we got there,there was only a dirty river,so we thought we got to a wrong But there was a old man,he said:"Here is a place where you want to go"He look so sad when he said Then he said:"Two years ago,here was really a beutifu place,but one day,many visitors come here and threw rubbish The river be dirty and dirty,and it look like this now"When I heard this,I think we should protect our It was really a meaningful activity第八篇Our school has now started an activity called “Build Civilized Classes and a Harmonious C” The topic is “ Get Rid of Bad Habits and Greet Civilization” Bad habits do Some students throw rubbish everywhere or spit in Some wear long Others are even addicted to smoking and We require that the students break away from these bad We urge the students to wear their school uniform and be polite to During the activity, we’ll hold a picture show, a competition of classroom and dormitory decorations and so We all hope that we’ll build each class into a civilized one and our campus into a harmonious 第九篇My Birthday PartyIt’s J Today I am16 years I am going to have a party at home and I am waiting for all my friends to They are going to bring?lots of beautiful presents with My parents are preparing a lot of nice things to eat and At the party we are going to play games, sing songs, dance and listen to I think we will have a good
关于植物资源的论文题目大全高中英语
你可以去专门的期刊网站、学术论文相关的网站,那里面都有
Go with Green First, let`s talk about the importance of green Green plants, through the photosynthesis turn solar energy into bio-energy。 And environment to constitute the organic matter of the The green plant is the foundation of energy transformation and material circulation of the earth biosphere and it is the direct source of materials and energy needed in the existence and development of human beings and other living Therefore, to maintain the each ecosystem, improve the living environment of human beings and guarantee the continuous development of the We should conserve the natural green plants and make them The reduction of the green plant deteriorates the environment, causes mere drought, storms, and serious soil erosion and make the greenhouse effect a mere serious 自己找自己能用的吧。
The introduction of our school This is something about the vivarium in my It is in the south-west of my president's The area of arboretum is about 1000 square And the school is The vivarium is used for fun and It established 20 years And rebuilding in I'm looking forward to play in it more [校长西南角。面积一千平方米。美化校园。研究植物场所。休闲之地。二十年的历史。2008年重健 ] 植物 【内容提示】 根据下面内容要点写一篇有关植物分类的文章: ①植物是非常重要的生物;没有植物,生命就无法维持。动物和人的食物来源于植物和其他动物。 ②植物可以利用空气、水和阳光制造养料,而人和动物则不能。 ③植物的种类繁多,但主要可分为两大类,即开花植物(flowering plants)和不开花植物(nonflowering plants)。 ④开花植物有根、茎、叶、花和果。我们周围所有的树木大都是开花植物。 ⑤不开花植物在我们周围见不到多少,它们是些针叶树、苔藓、欧龙牙草之类。 ⑥多数植物不是由种子而是由孢子长出来的。孢子和种子非常相似,落到潮湿背阴处就长成新的植物。 以下词语供参考: 1.coniferous a.针叶树的 2.moss n.苔藓;地衣3.liver-wort n.欧龙牙草 4.algae n.水藻;海藻 5.fungi n.真菌 6.spore n.孢子 【作文示范】 Plants Plants are very important living Life could not go on if there were no This is because plants can make food from air, water and Animals and man cannot do Animals get their food by eating plants and other Man gets his food by eating plants and animals, Therefore, animals and man need plants in order to If you look carefully at the plants around you, you will find that there are many types of Some plants are large while others are Most plants are There are two main types of plants: flowering plants and nonflowering Flowering plants have roots, stems①, leaves, flowers and Almost all the trees around us are flowering You can probably recognize some plants from their flowers or their Nonflowering plants include coniferous trees, mosses, liver-worts, algae and You cannot see many nonflowering plants around Most plants do not grow from They grow from Spores are very, very Some spores are so small and light that they can float in the We may say that spores are quite similar to When these spores fall on wet and shady② places, they usually grow into new 【词语解释】 ①stem [stem] n. 茎;(树)干;(叶)梗 ②shady[’sheidi] a.背阴的;阴凉的 During millions of years of evolution2, ants have developed intriguing3 relationships with many different kinds of Most of these associations4 are loose ones -- the ants find dwelling5 places on the plants,while bringing neither harm nor benefit to Often the ants live in hollow dead stems or small pockets of soil that accumulate6 on Thus ants inhabit trees over our heads and herbs at our feet,carving out living chambers7 and foraging8 for As many as 72 different species of ants have been found living on one tree in Peru's Amazon Basin 注释: 1.profitable adj.有益的,有用的 2.evolution n.[生]进化,进化论 3.intriguing adj.引起好奇心(或兴趣的),有迷惑力的 4.association n.友谊,伙伴关系 5.dwelling n.住处,住宅,寓所 6.accumulatevt.堆积,积聚 7.chambern.室,寝室 8.forage vi.搜寻 经过几百万年的进化,蚂蚁与多种不同植物形成了十分有趣的关系。其中大多数关系并不紧密:蚂蚁在植物上寻找居所,而并不给植物带来利和害。蚂蚁经常栖于中空的植物枯茎或枝干上堆积的小土坑中。因此,我们头顶的树木和脚下的草丛中都住着蚂蚁,它们在那儿建造居室或搜寻食物。仅在秘鲁的亚马逊流域,一棵树上住的蚁类就达72种之多。 Dear Editor; We often say such a word: Life comes from And as is known to all, we mostly live on the sea, which ,for human, is a most important resourse of both food and However, it is obvious that every year various sea living things are getting less and less in large Some species have died out and some are coming to What causes this? The overusage of the resourses and the pollution of the waters should account for that, I If we don't yet do anything to deal with these, we'll be sure to lose at least half of our So I expect the whole world would pay more attention to the problem of sea 现象:海洋动植物的数量正在减少,有些物种甚至灭绝了 原因:过度利用 水质污染 结论:海洋环境问题亟需关注