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2.A.aspects       B.extended     C.constructing      D.unfortunately     E.instance
F.traditional     G.continued     H.simply         I.based             J.units

In 1791the French nation,in the midst of a revolution,wished to break with the past,especially with those(41)A of it which they considered illogical and useless.One of those was the(42)F  system of weights and measures in use.Not only was the system clearly complicated,but it also varied widely from place to place.So the French spent a large amount of time and efforts regulating a new system.
In(43)C  the new system,the French began by setting up a unit of distance equal to one forty millionth part of the earth's circumference (周长).But(44)D  later measurements showed that the unit designed was not exactly that part,but they(45)G  to use it.(Today the unit is defined simply as the distance between two marks on a metal bar kept in suburb of Paris).The unit is the meter and the system of measurements(46)I  on this unit is the metric (米制的) system,the system today used by scientists all over the world.
The metric system is built in(47)J  of ten,Greek prefixes showing multiples and Latin prefixes showing fractions.The Greeks had no word for a number larger than ten thousand and the Romans had none for a number larger than one thousand,but the system was(48)B  by using less specific words; for(49)E  mega meter (one million meters) comes from a Greek word that means simply"large".

分析 本文主要介绍了法国进行的传统的重量和测量系统的改变.

解答 41.A  考查名词,根据句意"特别是随着它的那些方面,他们认为这不合逻辑而且无用"those后面跟名词的复数,所以答案选A.
42.F 考查上下文理解,根据下文So the French spent a large amount of time and efforts regulating a new system.法国花费了大量的时间和努力调整了一套新的体系,可见这里的the system 相对于新的就是传统的了,traditional"传统的",所以答案选F.
43.C 考查非谓语,根据句意"在构建新的体系的过程中"in是介词后跟动名词,construct是动词"构建",所以答案选C.
44.D 考查副词,根据句意"但是不幸的是后来的检测表明设计的单位不完全是那部分"unfortunately"不幸的是",所以答案选D.
45.G 根据句意"但是不幸的是后来的检测表明设计的单位不完全是那部分,但是他们继续使用它",continue to do"继续做某事",所以答案选G.
46.I 考查非谓语,根据句意"这种测量系统是以米为单位",base是动词"以…为基础",与被修饰词measurements之间是被动关系,所以用过去分词做定语修饰名词.
47.J 考查名词,根据句意"这种米制的体系是以十位单位"unit"单位"所以答案选J.
48.B 考查被动语态,"这种体系通过使用不太具体的词而被推广",extant"推广,延伸",是被动句,所以答案选B.
49.E 考查固定搭配,for instance 是英语中的固定搭配"例如,举例",所以答案选E.

点评 选词填空主要是完形填空题和所给词的形式填空,做这类题,有些是固定搭配,有的是固定句式,还有的是联系上下文猜测代词所指的内容和生 词的含义,你必须知道每个词的意思,从句意和语法两方面 思考界定.还有一些是易混淆的近义词组,务必弄清楚各个词组的含义.

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