门捷列夫兢兢业业地完成了学业，最后任职于当地的一所大学。虽然不出名，但是门捷列夫在化学元素排序问题上有创新。实际上，门捷列夫的方法，3年以前一位名叫约翰•纽兰兹的英格兰业余化学家已经提出过，这是科学上常有的事~~~

❤《万物简史》推出部落节目版，戳这里订阅:http://bulo.hujiang.com/menu/6004/



书本的朗读语音很charming的磁性英音~~~大家可以好好学着模仿哦~~~！！
因为原著为美国人所写,单词采用美式拼法,不抄全文，也不用写序号。答完一空换行继续下一空作答。文中需听写单词或词组用[-No-]表示，句子用[---No---]表示。请边听写边理解文意，根据下面的TIPS训练听写。这样可以提高听力准确度，并为训练听译打下基础哦~~~

TIPS听写训练点：单词拼写，时态，单复数，连读，长难句（请边听边用符号先记下内容，然后自己回头组织语句，最后校对，不要逐字逐句听写）当然啦，还有很多相当地道不错的表达方法可以顺道一起学到!



Hints:
competent
trim
Mendeleye
Newlands



Mendeleyev [-1-] completed his studies and eventually landed a position at the local university. [---2---]

However, in 1869, at the age of 35, he began to [-3-] a way to arrange the elements. At the time, elements were normally grouped in two ways—either by atomic weight (using Avogadro's Principle) or by common properties (whether they were metals or gases, for instance). [-4-]

[-5-] , the principle had actually been [-6-] three years previously by an amateur chemist in England named John Newlands. He suggested that when elements were arranged by weight they appeared to repeat certain properties—[-7-]—at every 8th place along the scale. Slightly unwisely, [-8-] , Newlands called it the Law of Octaves and likened the arrangement to the octaves on a piano keyboard. Perhaps there was something in Newlands's manner of presentation, but the idea was considered [-9-] preposterous and widely mocked. At gatherings, droller members of the audience would sometimes ask him if he could get his elements to play them a little tune. [---10---]


dutifully There he was a competent but not terribly outstanding chemist, known more for his wild hair and beard, which he had trimmed just once a year, than for his gifts in the laboratory. toy with Mendeleyev's breakthrough was to see that the two could be combined in a single table. As is often the way in science anticipated in a sense to harmonize for this was an idea whose time had not quite yet come fundamentally Discouraged, Newlands gave up pushing the idea and soon dropped from view altogether.
门捷列夫兢兢业业地完成了学业，最后任职于当地的一所大学。他在那里是个称职的而又不很突出的化学家，更以他乱蓬蓬的头发和胡子而不是以他在实验室里的才华知名。他的头发和胡子每年只修剪一次。 然而，1869年，在他35岁的那一年，他开始琢磨元素的排列方法。当时，元素通常以两种方法排列--要么按照原子量（使用阿伏伽德罗定律），要么按照普通的性质（比如，是金属还是气体）。门捷列夫的创新在于，他发现二者可以合在一张表上。 　　实际上，门捷列夫的方法，3年以前一位名叫约翰•纽兰兹的英格兰业余化学家已经提出过，这是科学上常有的事。纽兰兹认为，如果元素按照原子量来进行排列，它们似乎依次每隔8个位置重复某些特点--从某种意义上说，和谐一致。有点不大聪明的是--因为这么做时间还不成熟--纽兰兹将其命名为"八度定律"，把这种安排比做钢琴键盘上的八度音阶。纽兰兹的说法也许有点道理，但这种做法被认为是完全荒谬的，受到了众人的嘲笑。在集会上，有的爱开玩笑的听众有时候会问他，他能不能用他的元素来弹个小曲子。纽兰兹灰心丧气，没有再研究下去，不久就销声匿迹了。