1. Quasars __________ emitting extremely intense radio waves and visible radiation.
(A) Star-like objects are
(B) Star-like, they are objects
(C) are star-like objects
(D) are they star-like objects
答案：C
测试点：主谓结构.
分析：Quasar是主语，后面缺少动词及动词后所带成份，应在答案中选择动词十宾语或系动词斗表语的结构．(C)是系表结构.
解题要点：在4个答案中首先寻找以动词开头的形式.
2. Mary Cassatt specialized __________
mothers with their children.
(A) painted
(B) who painted
(C) paintings
(D) in painting
答案：D
测试点：习语。
分析：specialize是不及物动词，后面不能直接加宾语，而要用介词。答案中只有(D)有介词，故选(D)．specialize in+名词／动名词是固定短语.
3. Gorillas are quiet animals,
__________ they are able to make about twenty different sounds.
(A) how
(B) in spite of
(C) because of
(D) even though
答案：D
测试点：连词.
分析：逗号前后为两个主谓完整的句子，且是转折的关系，要用表示转折的连词连接．答案中只有(D)even though是表示转折的连词。(A)可以是连词，但无转折的意思；(B)(C)都是介词，不能连接句子.
解题要点：TOEFL结构题中的even though常常是首先要考虑的选择.
4. From 1946 to 1949, __________ William
Henry Hastie served as governor of the Virgin Islands.
(A) the lawyer
(B) he was the lawyer
(C) the lawyer who
(D) was the lawyer
答案：A
测试点：同位语。
分析：空格后是一完整的句子，主语前所缺的是主语的同位语。应在答案中选择说明主语身份的名词，即(A)．(B)是句子(C)后加从句(D)是系表结构，都不能作同位语.
5. __________ struck, a tuning fork
produces an almost pure tone, retaining its pitch over a long period of time.
(A) When is it
(B) One is
(C) When it is
(D) Is one
答案：C
测试点：状语从句.
分析：本句逗号后是一完整的句子，逗号前的部分为状语从句．应在答案中选择带有连接词的从句形式，即(C)．其实(C)省去it is，只保留when struck亦是正确的.
6. __________ one time, Manchester, New
Hampshire, was the home of the most productive cotton mills in the world.
(A) On
(B) At
(C) By
(D) To
答案：B
测试点：介词/习语.
分析：at…time是固定搭配，one time前的介词应当用at.
7. The edible tube mushroom __________ a
cushion-like, moist cap that is light brown or darkish red.
(A) which has
(B) to have
(C) having
(D) has
答案：D
测试点：谓语。
分析：空格两边都是名词成份，所缺为谓语，应在答案中选择能作谓语的动词，即(D)。(A)多了主语 (B)(C)都是非谓语动词.
8. In 1961 the entertainer Chubby
Checker introduced a __________ to New York’s rock’n ‘ roll fans.
(A) new dance, the twist
(B) twist, was the new dance
(C) twist, the new dance that
(D) new dance is the twist
答案：A
测试点：宾语侗位语.
分析：冠词a后面应是名词性成份，作introduce的宾语，故选择(A)．答案(D) (C)中有动词出现；(B)中有连接词，均错.
9. In sculpture __________”modeling”
denotes a way of shaping clay, wax, or other pliable materials.
(A) to the term
(B) is termed
(C) the term
(D) to term
答案：C
测试点：主语/同位语.
分析：denotes是谓语动词，它前面是主语部分．所缺为主语，则应在答案中选择名词，即(C)the term。modeling为主语的同位语。
10. The capacity for flight
__________insects from the other invertebrates.
(A) to distinguish
(B) distinguishes
(C) which distinguishes
(D) distinguishing
答案：B
测试点：谓语.
分析：本题与第7题属同一题型．空格前后都是名词性结构．所缺为谓语．应在答案中选择能作谓语的动词，即(B)．(A)(D)都是非谓语动词不能单独作谓语；(C)多了主语.
11. Although pecans are most plentiful
in the southeastern part of the United States, they are found __________ Ohio
and Illinois.
(A) far north
(B) north as far
(C) farthest north
(D) as far north as
答案：D
测试点：as…as的用法.
分析：此结构表示程度．答案(A)如改为far north
in亦可．(B)(C)结构错误．此句意为“朝北方一直远至Ohio和nlinois”.
解题要点：表示程度的as…as”结构出现在答案中，应首先考虑。
12. __________ of caffeine can result in
restlessness, insomnia, and even delirium.
(A) Consuming in excess
(B) Excessive consumption
(C) To consume excessively
(D) The consumption excessive
答案：B
测试点：主语／词序.
分析：介词of前面应当是名词或名词词组．作本句的主语．答案中，(B)是正确的名词词组．(A)、(C)错，因consume作“消费、吃喝”讲时应是及物动词，不能后接介词of；(D)词序错误。
13. Considered one of the leading poets
in America today,__________.
(A) a number of books and plays have also been
written by Sonia Sanchez
(B) Sonia Sanchez has also written a number of
books and plays
(C) A number of Sonia Sanchez books and plays have
been written
(D) There have been a number of books and plays
written by Sonia Sanchez
答案：B
测试点：主语一致.
分析：分词短语作状语置于句首时，其逻辑上的主语应当与句子的主语一致．本句considered…的逻辑主语是人，句子主语也应是人。应在答案中选择以人名等作主语的形式，即(B)。(A) (C)主语均为books，(D)用了表“存在”的there be句型，均与前面部分主语不一致.
14. Variables such as individual and
corporate behavior __________ nearly impossible for economists to forecast
economic trends with precision.
(A) make
(B) make it
(C) it makes
(D) makes it
答案：B
测试点：习语动词make及其相关习语为TOEFL常考.
分析：本句用的是短语“make
it…for sb．to do sth．*．不定式to及其后成分为实际宾形，代词it为形式宾语.
15. __________ by transferring the blame
to others is often called scapegoating.
(A) Eliminate problems
(B) The eliminated problems
(C) Eliminating problems
(D) Problems are eliminated
答案：C
测试点：主语／动名词.
分析：本句所缺为句子主语，其后的by…短语表示方式，说明这个主语是一个动作，应考虑其可能是动名词或动名词短语。答案中(C)是动名词短语。(A)是动宾结构；(B)中心词是problems而非动作;(D)是句子.
16. Sea turtles date back 100 million year
and are the only ancient sea reptiles to survive the present
Day.
答案：A
测试点：数的一致.
分析：有阿拉伯数字出现时，应特别注意其后紧接的名词是否应为复数．这里year应为复数。
17. At a first, the scientific
method may appear to be a narrow and restrictive way of gaining
understanding.
答案：A
测试点：习语。
分析：At first是固定短语，a多余.
18. Since prehistoric times, artists
have portrayed subjects that representative their culture.
答案：D
测试点：词性。
分析：that是从句主语，后面接谓语动词。此处应当用动词represent而不用形容词representative.
19. How many people realize that agriculture
is a source of raw materials for clothing and to shelter?
答案：D
测试点：词性／并列结构.
分析：看到…and…，应想到它前后两部分同词性、同形式．此处要用名词shelter与clothing并列.
20. Mammals lose body heat to them
environment in cold weather more quickly than in hot weather.
答案：B
测试点：代词.
分析：environment为名词，前面要用形容词性的代词their作定语，不能用them.
21. Mahogany is often considered
the finest cabinet wood because they has most of the qualities desired
for furniture making.
答案：C
测试点：代词数的一致。
分析：谓语has为单数形式，主语应为相应的单数代词it。
解题要点：代词数的错用是TOEFL常考题型．注意划线代词是否与它所指代的名词单复数一致.
22. The situation comedy has proved
to a remarkably durable commercial television format.
答案：B
测试点：习语.
分析：prove+to be+名词是固定结构，此处缺be.
23. Calcium, the most abundantly
mineral in the body works with phosphorus in maintaining
bones and teeth.
答案：A
测试点：词性.
分析：副词abundantly不能修饰名词，此处要用形容词abundant。
解题要点：见到划线的-ly结尾的副词，要留意是否是形容词的误用.
24. Soil science begun with the
formulation of the theory of humus in1808.
答案：A
测试点：不规则动词的词形变化
分析：begun是过去分词，不能单独作谓语。应用过去式began。解题要点；划线的不规则动词，要注意其形式变化是否用错．TOEFL中常见的有，begin-began-begun，stand-stood-stood，set-set-set等.
25. Scholars tend to cite
1831 as the started of the United States abolitionist movement.
答案：C 测试点：词性。
分析：started是动词形式，而冠词the后须用名词．应为start.
26. Mary McDowell shared Jane Addam’s
interest in social work also was a loyal supprter of
the League of Nations.
答案：B
测试点：连词.
分析：also是副词，而此处要用连词and连接两个并列的分句.
27. In adolescence, a young
person may experience some stress emotional due to conflicting and confusing
social demands.
答案：B
测试点：词序.
分析：单个的形容词emotional应放在它所修饰的名词stress前.
解题要点： 形容词定语与其修饰的名词前后词序颠倒是常考题型。注意划线的名词+形容词的错误形式。
28. Situated in the heart of a
grain-farming and livestock-raising region, Abilene, Kansas, is a prosperous
trading and distribute center.
答案：D
测试点：词性/并列结构.
分析：以and作线索，确定此处应用distributing与trading并列，不能用distribute.
29. A hologram is a pattern usually made
on film in that can create a three-dimensional image of a
scene.
答案：B
测试点：多词.
分析：此处that在定语从句中作主语，前面无须加in.
30. The general sales tax has been
a major source of income for state governments, much of which derive
more than half of their budgets from it.
答案：B
测试点：many和much的用法.
分析：这两个词常被故意混淆．利用后文derive和their作线索，可确定which代指复数的governments，所以这里要用修饰可数名词的many来修饰which，不能用修饰不可数名词的much.
解题要点；注意划线的many或much是否用错.
31. Principal known for his
dictionary, Noah Webster was also the first epidimiologist in the
United States.
答案：A
测试点：词性.
分析：修饰动词的过去分词known要用副词principally，而不能用形容词principal.
32. Liquid lubricants contrast widely
in weighing, thickness, and boiling point.
答案：C
测试点：词性／并列结构.
分析：关键词是and，它要求其前后成份同词性、同性质．此处当用名词weight与thickness和point并列.
33. Interest with major social
events led to a period of growth in journalism after 1945.
答案：A
测试点：习语/介词。
分析：interest in是固定短语，不用with。
34. Saint Elmo’s fire is a luminous blue
discharge of electricity sometimes seen when a thunderstorm.
答案：D
测试点：介词.
分析：表示时间概念的连词和介词经常错用．连词when后只能接从句或分词而这里后接名词，不能用when，只能用介词in或during.
35. Almanacs in simple form have
been known from the invention of writing.
答案：B 测试点：since和from的用法.
分析：since和from常被相互错用．由have been known知道此句是现在完成时态，应想到时间状语该用since，不能用from.
36. If laid out in
straight line, the human digestive tract would measure approximately
thirty foot in length.
答案：D
测试点：数的一致／名词的数。
分析：题中遇有foot或feet出现时，应注意其单、复数是否用错。因前文有thirty，故此处应用复数feet.
解题要点；改错题中划线的foot或feet应予以首先考虑.
37. The relationship of Latin
American music to Black music in the United States is clearly evident
in the unaccented beats that are common to either.
答案：D
测试点：either和both的用法.
分析：“两者的共同特点”应是common to both，不用either．(B)clearly evident正确并非同意重复.
38. Today it is generally recognized
as the primary function of the Federal Reserve System is to foster the
flow of credit and money that will eventually facilitate a
balance in
international payments.
答案：B
测试点：形式主语.
分析：看到it is…的句式，应立即注意其是否用了“形式主语+that从句(或十不定式)”结构。这样，才不会被recognized as所迷惑。as应为that，引导真正的主语。
39. Pure
flint is too hard and even-grained that it chips in smooth curved
flakes.
答案：B
测试点：so that和too…to的用法
分析：TOEFL考试中常见把这两个结构错误搭配的题型．后文有that,说明(B)应当用so.
40. The typical Georgian-style
house is rectangular in shape, at less two stories high,
and designed around a central stairway.
答案：B
测试点：习语.
分析：At least是固定短语，表示”至少”，不用less.
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