2.A.a(chǎn)spects       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 (周長).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 本文主要介紹了法國進行的傳統(tǒng)的重量和測量系統(tǒng)的改變.

解答 41.A  考查名詞,根據(jù)句意"特別是隨著它的那些方面,他們認為這不合邏輯而且無用"those后面跟名詞的復(fù)數(shù),所以答案選A.
42.F 考查上下文理解,根據(jù)下文So the French spent a large amount of time and efforts regulating a new system.法國花費了大量的時間和努力調(diào)整了一套新的體系,可見這里的the system 相對于新的就是傳統(tǒng)的了,traditional"傳統(tǒng)的",所以答案選F.
43.C 考查非謂語,根據(jù)句意"在構(gòu)建新的體系的過程中"in是介詞后跟動名詞,construct是動詞"構(gòu)建",所以答案選C.
44.D 考查副詞,根據(jù)句意"但是不幸的是后來的檢測表明設(shè)計的單位不完全是那部分"unfortunately"不幸的是",所以答案選D.
45.G 根據(jù)句意"但是不幸的是后來的檢測表明設(shè)計的單位不完全是那部分,但是他們繼續(xù)使用它",continue to do"繼續(xù)做某事",所以答案選G.
46.I 考查非謂語,根據(jù)句意"這種測量系統(tǒng)是以米為單位",base是動詞"以…為基礎(chǔ)",與被修飾詞measurements之間是被動關(guān)系,所以用過去分詞做定語修飾名詞.
47.J 考查名詞,根據(jù)句意"這種米制的體系是以十位單位"unit"單位"所以答案選J.
48.B 考查被動語態(tài),"這種體系通過使用不太具體的詞而被推廣",extant"推廣,延伸",是被動句,所以答案選B.
49.E 考查固定搭配,for instance 是英語中的固定搭配"例如,舉例",所以答案選E.

點評 選詞填空主要是完形填空題和所給詞的形式填空,做這類題,有些是固定搭配,有的是固定句式,還有的是聯(lián)系上下文猜測代詞所指的內(nèi)容和生 詞的含義,你必須知道每個詞的意思,從句意和語法兩方面 思考界定.還有一些是易混淆的近義詞組,務(wù)必弄清楚各個詞組的含義.

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