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(xué)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(yù)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(huì)達(dá)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(jiǎn)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(xué)著模仿哦~~~！！
因?yàn)樵鵀槊绹?guó)人所寫,單詞采用美式拼法,不抄全文，也不用寫序號(hào)。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(qǐng)邊聽寫邊理解文意，根據(jù)下面的TIPS訓(xùn)練聽寫。這樣可以提高聽力準(zhǔn)確度，并為訓(xùn)練聽譯打下基礎(chǔ)哦~~~

TIPS聽寫訓(xùn)練點(diǎn)：?jiǎn)卧~拼寫，時(shí)態(tài)，單復(fù)數(shù)，連讀，長(zhǎng)難句（請(qǐng)邊聽邊用符號(hào)先記下內(nèi)容，然后自己回頭組織語句，最后校對(duì)，不要逐字逐句聽寫）當(dāng)然啦，還有很多相當(dāng)?shù)氐啦诲e(cuò)的表達(dá)方法可以順道一起學(xué)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.