同步练习
1）The five year deal obligates [A] the country to buy nine million tons [B] of grain a year [C] ，three million more as [D] the old pact's minimum.
解析：D错。改为than.
2）The lens of a camera performs the lens of the eye .
[A] in the same function [B] the same function as
[C] the function is the same as [D] and has the same function
解析：B对。本句的汉语意思是“照相机的镜头和眼睛的水晶体所起的作用相同”。
3）The elimination of inflation would ensure that the amount of money used in repaying a loan would have as the amount of money borrowed.
[A] as the same value [B] the same value
[C] value as the same [D] the value is the same
解析：B对。本句的汉语意思是“消除通货膨涨会保证还的钱与借时的钱同值”。
4）There are now methods for studying color vision in infants than there once were [A] more sophisticated than
[B] much more sophisticated
[C] much sophisticated
[D] sophisticated
解析：B为正确答案。
5）The photographs of Mars taken by satellite are than those taken from the Earth.
[A] clearest
[B] the clearest
[C] much clearer
[D] more clearer
解析：C为正确答案。
6）Common porpoises（海豚）are usually not considered [A] migratory，although [B] some do move [C] to more warmer [D] waters in winter.
解析：D错。改为warmer.
7）During observations made over a fifty year period， the power output of the Sun has than a few tenths of one percent.
[A] varied by no more [B] varied no more by
[C] not varied more by [D] more varied by not
解析：A为正确答案。
8）Few of the people who live on the cooperatives than they were as laborers.
[A] is well off financial
[B] financially well off
[C] are better off finanically
[D] financial better off
解析：C为正确答案。
9）He came all the way to China for promoting friendship for making money.
[A] other than [B] better than [C] more than [D] rather than
解析：D为正确答案。
10）He preferred to write the letter by hand .
[A] to typing it
[B] than type it
[C] to type it
[D] rather than type it
解析：D为正确答案。
11）The harder he tried，[A] the worst [B] he danced [C] before the large [D] audience.
解析：B错。改为worse.
12）The quicker a loan [A] is repaid [B] ，the least [C] it will [D] cost.
解析：C错。改为less.
13）Hot objects emit do cold objects .
[A] rays more than infrared（红外线） [B] rays are more infrared than
[C] more than infrared rays [D] more infrared rays than
解析：D对。本句中的比较级为形容词more（much 的比较级），被比较的两个事物为“hot objects”和“cold objects”，在所释放（emit）的红外线（infrared rays）的量上，前者多于后者。其中more修饰infrared rays，它们不能被分开，故只有D在词序上正确。空白后面为倒装语序，其中的do代替动词emit，本句空白后也可用正常语序，即“cold objects do”。
14）Last year the country had [A] fewer imports as [B] did the year before last [C] due to [D] the energy crisis.
解析：B错。改为than.
15）Long Island，an [A] island that forms the [B] southeastern part of New York，has a [C] greater population than which [D] of forty two of thefifty states.
解析：D错。改为that，代替population.
16）The grain of rye is longer [A] and slenderer [B] than [C] those of [D] wheat.
解析：D错。改为that.这里比较的“The grain”不是复数，不能用复数代词those.
17）The activities of the international marketing researcher are frequently much broader than .
[A] the domestic marketer has [B] the domestic marketer does
[C] those of the domestic marketer [D] that which has the domestic marketer
解析：C为正确答案。比较句中，连词than前后，即所比较的成分要一致，应该在同种事物间进行比较。本句所比较的是两种 activities ，故C正确，代词those 代替“the activities”。
18）The grape is cultivated plants.
[A] one of the oldest [B] the oldest one
[C] one which the oldest [D] the one is the oldest of
解析：A对。“one of the oldest…”表示“（历史）最长的栽种植物之一”，C和D均不合语法，而B选项中的one多余。
19） ，William Shakespeare is the most widely known.
[A] With all writers in English
[B] All writers in English
[C] All of the writers in English
[D] Of all writers in English
解析：D为正确答案。
20）The crane is of the wading birds.
[A] the tallest
[B] the tallest that is
[C] which is the tallest
[D] which the tallest is
解析：A为正确答案。
21）The Appalachians Trail，extending [A] approximately 2，020 miles [B] from Maine to Georgia，is the longer [C] continuous [D] marked footpath in the world.
解析：C错。只有在两者相比较时才使用比较级，而本句出现了状语in the world，明显表示不止两者相比，故应改用最高级（the）longest .
22）La Paz，Bolivia is the higher [A] capital city in [B] the western hemisphere and [C] the second highest [D] in the world.
解析：A错。改为the highest.
23）The best way to control rats is by seeing that they have as .
[A] possibly little nourishment [B] nourishment possibly little
[C] little as possible nourishment [D] little nourishment as possible
解析：D 为正确答案，“as little nourishment as possible ”意为“尽可能少的养料”。
24）Earlier [A] or later，all lakes are influenced [B] by eutrophication，a process in which lake sediment（沉积物）lowers the depth [C] of the water and drains（除去）oxygen from it [D] .
解析：A错。改为sooner.
25）Alexander Graham Bell once told his family that he would rather be remembered as a teacher of the deaf of the telephone.
[A] than inventing [B] than as the inventor
[C] the invention [D] as the inventor
解析：B为正确答案，两个短语“as a teacher of the deaf”和“ as the inventor of the telephone”相比。
26）Wool is characteristic on which to classify breeds of sheep.
[A] most obviously
[B] obvious the most
[C] the most obvious
[D] the most obvious that is
解析：C为正确答案。注意：空档后的“characteristic”是名词而不是形容词，所以不能填A。
27）The Democratic party has controlled [A] the most [B] of the elected positions at [C] state and local levels in South Carolina since [D] the Reconstruction.
解析：B错。改为most.
28）During [A] the seventeenth century the most [B] colonists were primarily concerned with [C] economics [D] and defense.
解析：B错。改为most.
29）Belgium，in the [A] 19th century，rapid [B] grew into [C] an industrial [D] country.
解析：A错。改为rapidly.
30）The Lost Colony in North Carolina mysterious [A] disappeared between [B] 1587 and 1590，when its [C] founder returned from a visit [D] to England.
解析：A错。改为mysteriously.
31）Many flatworms have of eyes .
[A] more pairs than one
[B] more than one pair
[C] one more pair than
[D] one pair more than
解析：B为正确答案。
32）Of the two houses the family prefers .
[A] the most isolated one
[B] the one isolated more
[C] the more isolated one
[D] the isolated one more
解析：C为正确答案。
33）Freezing is at present one of the of preserving meats and vegatables.
[A] most methods are important
[B] methods most important
[C] most important methods
[D] most are important methods
解析：C为正确答案。
34）The radio was of so [A] inferior quality that [B] I took it back [C] and asked for a better one [D] .
解析：A错。改为such.
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