萬物簡史:PART II CH 7基本物質(zhì)(20)
來源:滬江聽寫酷
2011-12-12 09:05
元素周期表抽象而美麗。很多元素在合成過程中只存在瞬間,科學家無法確定其是否存在。但是門捷列夫的發(fā)明按規(guī)律預留了很多空位,使得新元素一旦發(fā)現(xiàn)便能在表上各就各位。沒有人知道元素的數(shù)目最多會達到多少。但是,可以肯定,凡是找到的元素都可以利索地納入那張偉大的圖表~~~
?《萬物簡史》推出部落節(jié)目版,戳這里訂閱:http://bulo.hujiang.com/menu/6004/
書本的朗讀語音很charming的磁性英音~~~大家可以好好學著模仿哦~~~!!
因為原著為美國人所寫,單詞采用美式拼法,不抄全文,也不用寫序號。答完一空換行繼續(xù)下一空作答。文中需聽寫單詞或詞組用[-No-]表示,句子用[---No---]表示。請邊聽寫邊理解文意,根據(jù)下面的TIPS訓練聽寫。這樣可以提高聽力準確度,并為訓練聽譯打下基礎哦~~~
TIPS聽寫訓練點:單詞拼寫,時態(tài),單復數(shù),連讀,長難句(請邊聽邊用符號先記下內(nèi)容,然后自己回頭組織語句,最后校對,不要逐字逐句聽寫)當然啦,還有很多相當?shù)氐啦诲e的表達方法可以順道一起學到!
Hints:
orderliness
Mendeleyev
For most of us, the periodic table is a thing of beauty in the abstract, but for chemists it established an immediate [-1-] that can hardly be overstated. “Without a doubt, the Periodic Table of the Chemical Elements is [-2-] chart ever devised,” wrote Robert E. Krebs in The History and Use of Our Earth's Chemical Elements, and you can find similar sentiments [-3-] every history of chemistry in print.
Today we have “120 or so” known elements—92 naturally occurring ones plus a couple of dozen that have been created in labs. The actual number is slightly contentious because the heavy, [-4-] elements exist for only millionths of seconds and chemists sometimes argue over whether they have really been detected or not. [---5---] His table predicted, with pleasing accuracy, where new elements would [-6-] in when they were found.
No one knows, incidentally, [-7-] , though anything beyond 168 as an atomic weight is considered “purely speculative,” but what is certain is that anything that is found will [-8-] Mendeleyev's great scheme.
?《萬物簡史》推出部落節(jié)目版,戳這里訂閱:http://bulo.hujiang.com/menu/6004/
書本的朗讀語音很charming的磁性英音~~~大家可以好好學著模仿哦~~~!!
因為原著為美國人所寫,單詞采用美式拼法,不抄全文,也不用寫序號。答完一空換行繼續(xù)下一空作答。文中需聽寫單詞或詞組用[-No-]表示,句子用[---No---]表示。請邊聽寫邊理解文意,根據(jù)下面的TIPS訓練聽寫。這樣可以提高聽力準確度,并為訓練聽譯打下基礎哦~~~
TIPS聽寫訓練點:單詞拼寫,時態(tài),單復數(shù),連讀,長難句(請邊聽邊用符號先記下內(nèi)容,然后自己回頭組織語句,最后校對,不要逐字逐句聽寫)當然啦,還有很多相當?shù)氐啦诲e的表達方法可以順道一起學到!
Hints:
orderliness
Mendeleyev
For most of us, the periodic table is a thing of beauty in the abstract, but for chemists it established an immediate [-1-] that can hardly be overstated. “Without a doubt, the Periodic Table of the Chemical Elements is [-2-] chart ever devised,” wrote Robert E. Krebs in The History and Use of Our Earth's Chemical Elements, and you can find similar sentiments [-3-] every history of chemistry in print.
Today we have “120 or so” known elements—92 naturally occurring ones plus a couple of dozen that have been created in labs. The actual number is slightly contentious because the heavy, [-4-] elements exist for only millionths of seconds and chemists sometimes argue over whether they have really been detected or not. [---5---] His table predicted, with pleasing accuracy, where new elements would [-6-] in when they were found.
No one knows, incidentally, [-7-] , though anything beyond 168 as an atomic weight is considered “purely speculative,” but what is certain is that anything that is found will [-8-] Mendeleyev's great scheme.
orderliness and clarity
the most elegant organizational
in virtually
synthesized
In Mendeleyev's day just 63 elements were known, but part of his cleverness was to realize that the elements as then known didn't make a complete picture, that many pieces were missing.
slot
how high the number of elements might go
fit neatly into
對我們大多數(shù)人來說,周期表是一件美麗而抽象的東西,而對化學家來說,它頓時使化學變得有條有理,明明白白,怎么說也不會過分。"毫無疑問,化學元素周期表是人類發(fā)明出來的最優(yōu)美、最系統(tǒng)的圖表。"羅伯特?E.克雷布斯在《我們地球上的化學元素:歷史與應用》一書中寫道--實際上,你在每一部化學史里都可以看到類似的評價。
今天,已知的元素有"120種左右"--92種是天然存在的,還有20多種是實驗室里制造出來的。實際的數(shù)目稍有爭議,那些合成的重元素只能存在百萬分之幾秒,是不是真的測到了,化學家們有時候意見不一。在門捷列夫時代,已知的元素只有63種。之所以說他聰明,在一定程度上是因為他意識到當時已知的還不是全部元素,許多元素還沒有發(fā)現(xiàn)。他的周期表準確地預言,新的元素一旦發(fā)現(xiàn)就可以各就各位。
順便說一句,沒有人知道元素的數(shù)目最多會達到多少,雖然原子量超過168的任何東西都被認為是"純粹的推測";但是,可以肯定,凡是找到的元素都可以利索地納入門捷列夫那張偉大的圖表。
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