OG12-131解释：

　　Rhetorical construction; Logical predication

　　This sentence compares percentages and uses the prepositional phrases in France and in Germany to

　　distinguish the percentage of energy in each country coming from nuclear power. This information is most efficiently and clearly presented in two clauses joined by the conjunction whereas, which signifies a difference between the situations in the two countries. Each clause must identify what the percentage refers to—that is, the portion of the respective country’s energy that comes from nuclear power.

　　A While is somewhat ambiguous, since it might indicate simultaneity rather than contrast; the referent of it is ambiguous, raising questions about just what two things are being compared.

　　B This sentence compares 75 percent to Germany; it is not clear what 33 percent refers to.

　　C Correct. Th e two clauses joined by whereas indicate clearly that the comparison is between the diff erent percentages of energy coming from nuclear power.

　　D The use of the definite article the makes it seem as though the energy being referred to in this part of the sentence is that of France.

　　E This construction is wordy and unclear; the referent of it is ambiguous.

　　The correct answer is C.

　　补充说明：

　　that , one , it 的区别--aeoluseros:

　　I. it/one /that三者均可用作代词, 指代前面提到的名词。一般说来, it指代同名同物; one与that则指代同名异物。

　　I have lost my umbrella; I'm looking for it. (该句中it就是指前面的my umbrella)

　　I have lost my umbrella; I think I must buy one. (one在该句中表泛指, 因为my umbrella已经丢了)

　　The umbrella you bought is cheaper than that I bought. (替代词that在该句中特指“the umbrella I bought”, 以区别“the umbrella you bought”)

　　II. one与that虽可用来指代同名异物, 但one为泛指, 相当于a/an+名词; that为特指, 相当于the +名词。所以one所指代的名词的修饰语一般为 a/an /some /any; that所指代的名词的修饰语往往是the /this /that。

　　A chair made of steel is stronger than one made of wood. (该句中one可以换成a chair)

　　The water in the cup is hotter than that in the pot. (该句中that可以换成 the water)

　　III. one只能代替可数名词单数, 代替可数名词复数时用ones; that既可以代替不可数名词也可以代替可数名词单数, 代替可数名词复数时用 those。

　　I like this pen more than that one. (one代替可数名词单数pen)

　　There were a few young people and some older ones in the house. (ones代替可数名词复数people)

　　Mary's handwriting is far better than that of Peter. (that代替不可数名词 handwriting)

　　These pictures are more beautiful than those. (those代替可数名词复数 pictures)

　　IV. one既可代替事物, 也可代替人, that只能代替事物而不能代替人。有时可以用the one或the ones代替that或those。

　　The one /That on the table is mine. (该句中The one代替事物, 并且也可以用That)

　　He is the teacher, the one who is loved by the students. (该句中the one代替人, 不能用that)

　　He advised the farmers to choose the best seed-heads, the ones /those that had the best color. (该句中the ones代替事物, 并且也可以用those)

　　V. one一般有前置修饰语, 有时也可有后置修饰语或不用修饰语。而 that不能有前置修饰语, 但可有后置修饰语。

　　Cook was a strict but good captain, one who took good care of his sailors.

　　The water in the well is cleaner than that in the river.

　　VI. it可以替代句中的不定式或从句等, 充当形式主语或形式宾语。one与that均无此用法。

　　It is known to everybody that the moon travels around the earth once every month.

　　I found it hard to get on with her.

　　VII. it与that均可以替代上文全句的内容或部分内容, 而one /ones则不可以(本条为日常语法中常用，而GMAT中it与that无法指代上文全句，)。

　　He has saved my life; I'll never forget it. (it代替第一分句)

　　Tom is painting his house. I am told he does it every four years. (it代替前面分句的部分内容painting his house)

　　Let's say we meet here at three o'clock. That ought to give you

如有相关问题，可拨打免费咨询热线：010-58443520 或

考试培训小助手

本科留学qq:436560382

研究生留学qq:437946603