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自行車俱樂部

發布：2019-06-18 17:16:00編輯：視頻君來源：視頻教程網

知識點：《自行車俱樂部》 收集：隆萊栽 編輯：桂花
本知識點包括：1、中國騎行俱樂部的簡介 2、單車俱樂部 3、自行車協會的管理辦法 4、自行車俱樂部起個名字 5、加入自行車俱樂部一般要什么樣檔次的車呢？。

《自行車俱樂部》相關知識

School Bicycle Club

Time: Every Tuesday and Friday afternoon, from 3:45 to 5:15

Place: School Bicycle Center

Come and join us! We promise you will enjoy it!

If you are interested, please contact us:

Tel:12345678

e-mail: schoolbicycleclub@fushan.sports.cn

知識拓展：

1：【求一篇關于自行車的英語作文寫一些關于自行車的優點和缺點.200詞左右,希望有一定英語基礎的朋友幫個忙給做個參考,】

知識要點歸納：

Everyone knows that cycling is a fun,healthy and economical means of travel around the neighborhood.

The advantages of bicycles mainly are as follows：each commuter can drive it directly where they have to go without changing stations or modes；bicycles are much more maneuverable in city mazes,and can take to the sideways to avoid grid lock,can land on any rack,railing or parking meter right outside the place of business,and can always be carried into a building for additional parking or security；Bicycling is also good for our environment,bicycles are 100% pollution free; cycling is good for our health; besides,Bicycle riding is the least expensive way of traveling apart from walking.

Although there are so many advantages,it also has its own limitations：it is unsuitable for long journey；most bikes don't have a roof in case of rain; we can't bring our family with us,unless they have bikes of their own,etc.

2：校園浪費現象寫一篇英語作文WhatweoftenseeinourschoolLeavethetapesonaftercleaninghandsLeavethelightsonwhenleavingWastespaperThrowthefoodawayaftermeals針對這種現象,以班級名義寫一份倡議書

知識要點歸納：

Suggestion

Wastage is a phenominon which we should do something useful to get rid of .However,what we often see in our school is leaving the tapes on after cleaning hands,leaving the lights on when leaving,wasting paper,throwing the food away after meals,etc.Now it is suggested that we classmates should make our effects together to put an end to wastage!Turn off the tapes after cleaning hands,turn the lights off when leaving,skimp our paper and put the food into the refrigerator after meals!

Uion of class monitors

3：英語作文自行車現在社會自行車仍很受歡迎自行車的好處其他車輛帶來的交通事故所以應騎自行車70到80字左右!

知識要點歸納：

Bicycles are welcome by the people who love sports.But ,with more and more pollutions,especially the air pollution,we should ride bikes more oftenly.First of all,we can reduce the traffic accidents by riding bicycles.Secondly,riding bicycles can save energy which is becoming less and less.And the third,perhaps,the most important is that riding bicycles can help protect our environment.That is why more and more people begin to use their bicycles to work,to schoo or to anywhere they like.And they think that it is also a good sport which can make people much more healthy.

4：要參加...俱樂部的英語作文要參加...俱樂部的英語作文急,今天要

知識要點歸納：

How Much Nature Is Enough?

By Andrew C.Revkin

Even some ardent conservationists acknowledge that the diversity of life on Earth cannot be fully sustained as human populations expand use more resources nudge the climate and move weedlike pests and predators from place to place.

Given that some losses are inevitable the debate among many experts has shifted to an uncomfortable subject what level of loss is acceptable. The discussion is taking place at both the local and global levels How small can a fragment of an ecosystem be and still function in all its richness and thus be considered preserved? And as global biodiversity diminishes is it a valid fallback strategy to bank organisms and genes in zoos DNA banks or the like or does this simply justify more habitat destruction? Is nature on ice a sufficient substitute for the real thing? Some conservation groups have strenuously avoided or even attacked such calculations and strategies. They say there is no safe diminution of habitat as long as human understanding of ecology is as sketchy as it is a fallback strategy is unthinkable. Furthermore banking nature in a deep freeze or database of gene sequences cannot capture context. For instance even if a vanished bird was someday reconstituted from its genes would it warble with the same fluency as its ancestors? On the other side of the debate those considering what the smallest viable habitats are or how to expand archives as an insurance policy say that recent trends have proved that old conservation strategies are no longer sufficient. A few decades ago the issue seemed fairly uncomplicated identify biological “hot spots” or species of concern and establish as many reserves as possible. But the picture has grown murky.

Twentyfour years ago Dr. Thomas E. Lovejoy and other biologists began a remarkable experiment on the fasteroding fringe of rain forest near the Brazilian city of Manaus. They established 11 forest tracts ranging from 2.5 to 250 acres each surrounded by an isolating sea of pasture similar to what is advancing around most other tropical forests. Among the many findings an analysis published last week on birds in the lower layers of greenery found that it would take a fragment measuring at least 2500 acres—10 times as large as the biggest one in the experiment—to prevent a decline of 50 percent in those bird varieties in just 15 years or so.

In the understated language of science the new study in The Proceedings of the National Academy of Sciences concludes “This is unfortunate when one considers that for some speciesrich areas of the planet a large proportion of remaining forest is in fragments smaller than 2500 acres.”

In the face of this and other evidence a growing group of conservation biologists say try everything at the same time. “Clearly the most effective way to protect biodiversity is to protect natural areas” said Dr. Peter H. Raven the director of the Missouri Botanical Garden “and to find those organisms most endangered in nature and somehow protect them in typeculture collections botanical gardens zoos seed banks or whatever.” But most important he said is to find ways to limit human pressures on the world’s last wild places by slowing population growth and using resources more efficiently. One pioneer of genetic deconstruction Dr. J. Craig Venter agrees with Dr. Raven. Dr. Venter has moved from sequencing the DNA of humans and other species to assaying genes in entire ecosystems most recently the waters of the Sargasso Sea. In five 50gallon samples gathered in February he said his team had found 1 million distinct genes quite a haul compared with the 26000 or so of a human being. And that is the tiniest scratch in the surface he added. His is one effort among many. Britain has a Millennium Seed Bank a growing archive of all the country’s plants. The San Diego Zoo has its parallel Frozen Zoo an archive of thousands of DNA samples and cell lines from a host of species. Nonetheless given the overwhelming complexity of nature Dr. Venter added “we’re better off trying to preserve the diversity of what we have rather than trying to regenerate it in the future.”

環保的困境：自然要多大才足夠?

連一些積極的自然資源保護論者都承認,隨著人口的膨脹、消耗更多的自然資源、引起氣候的變化,以及造成大量害蟲和捕食動物的遷移等,地球上的生物多樣性肯定不會完全地持續下去.

許多專家的爭論焦點已經轉到了一個令人不安的話題,假使一些損失是不可避免的,多大程度的損失是可以容忍的呢?關于這個問題的辯論在局部和全球范圍兩個層面上同時：生態系統的一小部分可以小到何種程度仍能維持其完整、豐富的功能,從而可以認為是受到了保護呢?在全球生物多樣性減少的過程中,把生物有機體和基因保存在諸如動物園、基因庫之類的地方是一種有效的保全策略嗎?或者這樣做僅僅為更多的(動、植物)棲息地的破壞提供了借口?冷藏的自然能夠充分地代替真正的自然嗎?一些自然資源保護組織一直極力避開甚至反對這樣的推論和策略.他們說,只要人類對生態系統的認識還是一知半解的,那就不存在對棲息地的安全縮小；因此也就談不上什么保險策略了.更何況,把自然生態深凍起來或者將其存入基因序列數據庫并不能保存與其相關的背景.比如,就算一只滅絕的鳥兒某一天被人們從它的基因中重新組合出來,它的啁啾聲能像其先輩們一樣婉轉動聽嗎?另一方面,尋求最小可行棲地的人們或試圖擴大現有檔案庫作為一種保全策略的人們則說,最近的趨勢已經表明,舊的保護策略不再夠用了.幾十年之前,問題似乎還不是那么復雜：只要確認出那些受到威脅的生態地區或者令人擔憂的物種,然后建立盡可能多的保護區就是了.然而,目前這個狀況已經變得模糊起來.

24年以前,托馬斯•E•洛夫喬伊博士和其他一些生物學家在巴西馬瑙斯市附近遭受快速侵蝕的熱帶雨林地區邊緣開始了一項備受矚目的實驗.他們建立了11塊森林試驗區,面積大小從2.5英畝到250英畝不等,每一塊都被一片分割開來的廣袤草場包圍起來,這些草場與正在向大多數其他熱帶雨林周邊推進的草場相類似.在大量的調查結果中,上周出版的一篇關于生活在綠地較低層的鳥類的分析報告發現,至少需要一塊2500英畝的森林區域——相當于實驗中劃出來的最大的一塊試驗區的10倍——才能防止那些鳥類的品種在僅僅15年左右的時間里減少50%.

《美國國家科學院學報》上新刊登的一篇專題研究論文用毫不夸張的科學語言總結道：“當你考慮到在地球上一些物種資源豐富的地區,留存下來的森林中一大部分是小于2500英畝的分散小塊時,這是多么不幸.”

面對這些情況和其他證據,愈來愈多的自然資源保護生物學家說：應該同時嘗試所有可行的辦法.美國密蘇里州植物園園長彼得•H•雷文博士說：“顯然,最有效的保護生物多樣性的方法是保護自然棲息地,同時,還要找出那些自然界中最為瀕危的物種,用某種方法把它們保護起來,比如,把它們放入物種培育采集庫、植物園、動物園、種子銀行等諸如此類的地方.”他說,但最為重要的是通過減緩人口增長和更有效地利用資源找到減少人類對世界最后原始生態地區的壓力的方法.遺傳解構學的先驅之一,J•克雷格•文特爾博士同意這一看法.文特爾博士從對人類和其他物種的DNA基因排序的研究轉到了對整個生態系統的基因分析,最近開始了對馬尾藻海海水的研究.他說,他的小組在2月份(指2003年2月份——譯者)收集的5份50加侖的樣本中發現了上百萬種不同的基因類型,這與人類個體具有的約26000種基因相比實在是太多了.他補充說,這不過才觸及到皮毛而已.他所做的只是許多努力中的一部分.英國有一個“千禧年種子銀行”.它不斷擴大,收藏了該國所有植物.(美國)圣地亞哥動物園有一座與其相應的“冷藏動物園”,其中保存了許多物種的數千個DNA樣本和細胞株的資料.即使如此,考慮到自然界極為復雜,文特爾博士補充說：“如果我們盡力保護好現存生物的多樣性,而不是試圖在將來去重新創造它,我們才更明智.”

5：【關于自行車的英語作文】

知識要點歸納：

Bike is a popular means of transportation .It is a friendly environment transport tool.I like riding bikes when go travelling or go shopping.Nowdays motor cars are increasingly popular but I think it will cause a lot of damage to us .First it will give out lots of waste gas,which will contribute to the global warming.It is bad for our earth.Second.the number of the cars is becoming larger and larger and the crowded traffic will certainly bring about the risk of safety.So I think riding a bike is a better choice if we take environment into consideration.