西南大学博士入学考试英语试题(2012) GFL-.?
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Part I Vocabulary (10 points) @i1q]0
Directions: In this part there are 20 incomplete sentences. For each sentence there Y[G9Vok
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are four choices marked A, B, C and D. Choose the one that best completes the d G0 VBE
following sentences. Then blacken the corresponding letter on the Answer Sheet CDCC1B G"
1. A broadcasting station will sometimes to its listeners a programme which '5rUe\k
it has received from another station. QO,+ps<
. RL
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A. rely B. relay C. relate D. reside d)KF3
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2. The United Nations Conference on Drug Abuse, which took place earlier this year v8'5pLt"
in Vienna, was a very meeting. l &Z(K,6
A. productive B. overwhelming C. compulsory D. protective Pfan7fq+
3. A person who studies ___ learns how to express numbers approximately and &HL{LnLP@/
how to calculate ratios and averages. y x;h
A. static B. statistic C. statistics D. status LdEE+"Jw
4. If you ______ someone, you form a fixed general idea or image of them so that HcO5?{2
you assume that they will behave in a particular way. w1i?#!|
A. assimilate B. simulate C. stereotype D. subordinate xa#gWIP*
5. Reading ______ the mind only with materials of knowledge, it is thinking that * nCx[
makes what we read ours. fl)zQcA
A. rectifies B. prolongs C. furnishes D. minimizes |!Ists
6. Satellite communications are so up-to-date that even when _____ in the middle K7RKF$Z\
of the Pacific, businessman can contact their offices as if they were next door. hdg<bZk:
A. gliding B. cruising C. piloting D. patrolling &+- e
7. Now a paper in Science argues that organic chemicals in the rock come mostly s0!kwrBsp
from _______ on earth rather than bacteria on Mars. )!,@m>0v{
A. configuration B. constitution C. condemnation D. contamination z2~87fv+
8. Scientists, who are now aware of how nautiluses regulate their buoyancy, have CQ1 8%w6
been able to dispel ideas about these creatures. )X%oXc&C|
A. erroneous B. misdemeanors C. misgivings D. misdirection a8QfkOe
9. History has demonstrated that countries with different social systems and UABbcNW
ideologies can join hands in meeting the common challenges to human _____ and Yxqj -
development. `]{Psc6_=
A. evolution B. survival C. rivalry D. dignity PbN3;c3
10. To avoid an oil shortage, we should advocate that more machines must _____ of .vaJ Avg
life in a short time, and this made others astonished. {(0Id !
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A. accelerate B. operate C. generate D. utilize nx$bM(.
11. Japanese leaders aboard the U. S. battleship Missouri and signed the ____ xB,/dMdTj
surrender, which ended World War Two in 1945. )Ga8`t"
A. conditional B. infinite C. everlasting D. unconditional 5L3
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12. It is a _____ that in such a rich country there should be so many poor people who -(
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could hardly keep their body and soul together. y#e ?iE@
A. hypothesis B. paradox C. conflict D. dispute R8ZD#,;
13. The _____ effects of many illnesses made him a weak man and he still didn’t GGM5m
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want to do sports every day. Wl
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A. cumulative B. formidable C. eternal D. prospective OPLl*bnf
14. The robbers broke into the bank, _____ the clerics with revolvers and forced them 6VFirLd
to give money just as they were about to knock off. kyu2)L2u
A. shot B. frightened C. amused D. menaced B,MQ.|s[
15. This pair of boots cost much less than yours for I bought them when the QH:>jmC{1h
department store made a _____ of the stored goods. '}CN?f|.
A. clearance B. reduction C. fortune D. deal ->3uOF!q
16. Technology has _____ the sharing information and the storage and delivery of G g(NGT
information, thus making more information available to more people. R`
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A. formulated B. facilitated C. furnished D. functioned W[fT
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17. Language, culture and personality may be considered _____ of each other I thought, Q!`)e @r
but they are inseparable in fact. 8XlU%a6x
A. indistinctly B. separately C. irrelevantly D. independently $8Ig&k|~8
18. More than 85 percent of French Canada’s population speaks French as a mother [bsXF#
tongue and _____ to the Roman Catholic faith. @wMQC\Z
A. caters B. adheres C. ascribes D. subscribes OelU
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19. There are not many teachers who are strong _____ of traditional methods in \Vz,wy%-
English teaching. S7Znz@
A. sponsors B. contributors C. advocates D. performers i`R(7Z
20. The ______ of the scientific attitude is that the human mind can succeed in :q(D(mK
understanding the universe. )O9f hj)
A. essence B. content C. texture D. threshold \FVNXUMU
Part II Reading Comprehension (30 points) "~_$T@^k>
Directions: ~Po\ En
Questions 21 to 25 are based on the following passage. +;YE)~R?
There are 6 reading passages in this part. Each passage is followed by 4Q@\h=r
some questions or unfinished statements. For each of them there are four choices \zBd<H4S:
marked A, B, C and D. you should decide on the best choice and mark your answer on g
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the Answer Sheet. ?vMK'"
Spread across the United States are about 500,000 doctors, cheeked by jowl, in the b-2pzcK{#
big cities and thin on the ground in isolated small towns. In June 1986, the secretary QjI#Cs}w
of health and human services, Dr. Otis Bowen, passed on a view of his experts: 5%-15% v: giZxR
of America’s 500,000 doctors should be candidates for disciplinary action, many of tc"T}huypU
them because of drug taking or alcoholism. Others give their patients poor care JR])xPI`
because they are senile, incompetent, guilty of misconduct or out of touch with ix:2Z-
developments in medicine. cW=Qh-`jU;
The granting, or withdrawal, of licenses to practice is in the hands of state medical [?A&x
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boards, but they are overwhelmed with complaints and lack the money to handle even Pb0)HlLq
a fraction of them. Recently, however, things have been changing. In 1985, 406 *+NGi(N
doctors lost their licenses (compared with 255 in 1984), nearly 500 were placed on 3T"2S[gT
probation and nearly 1,000 received reprimands or had their right to practice curtailed. sf
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The federal inspector general demanded, and won the right far the states and the :sU!PF[<
federal government, which provide health care for the elderly and for the poor under ^g}L`9fL
the Medicare and Medicaid programme, to refuse payment to the doctors considered C(f$!~M4b
unsatisfactory. ,<7"K&
Yet putting these powers into practice is proving to be far from easy. O f the 35 ] gH
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doctors so far denied reimbursement from Medicare, almost all work in lightly {F<)z%^
populated rural areas. O n March 27th, their indignation and that of their patients were _2wAaJvA
a sympathetic hearing by the Senate Finance Committee. Rural doctors may not be as ixIh
T
up to date as those in the big towns, but they are often the only source of medical help 5P-K *C&
for miles around and their patients are loyal to them. Members of the review boards, Qk?jGXB>^
which are paid by the government, insist, however, that elderly and poor people J>&[J!>r
should not be forced to receive (and the state to pay for) inferior care. Xq+!eOT
An innovation is on the horizon in Texas, the most under-doctored state in the \El|U#$u'
country (with only one doctor for every 1,100 residents). Lubbock University is xt?3_?1
setting up a computer network that will enable country doctors to obtain medical j kSc&
expertise and access to medical records in a hurry. The aim is to reduce the isolation jn.R.}TT
of the country doctors and thus, in the long run, to attract more young doctors to rural R1II k
areas. >`<Ued
21. The main topic of the passage is . 3 %z
A. the present situation of American doctors &mX5&e
B. the legislation on rural medical services GwTT+
C. the problems of country doctors and possible solutions {
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D. some factors of disqualification of country doctors 99\{! W
22. According to the text, disciplinary action should be taken against those who l0qdk#v
give patients poor care because of the following reasons EXCEPT . @WhZx*1
A. taking drugs and drinking alcohol |^YzFrc
B. feeling remorse of their bad behavior t#fs:A7P?}
C. being professional unskillful CnxK+1n l
D. being sick and conservative _<u8%\
23. Which of the following is true about the unfit doctors? uPa/,"p
A. 1,500 doctors were deprived of the right to practice medicine. !7e
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B. The federal government has got the right to deny reimbursement to those 2#>$%[
unqualified doctors. '"!z$i~G=
C. Almost all the doctors who fail to get payment from Medicare work in Dj-\))L
densely populated urban areas. 08<k'Oi]
D. Patients in the rural areas complain about the poor treatment their doctors 5*s1qA0^
give them. +)/Rql(lY
24. It can be inferred from the text that in the near future . !!?+M @
A. there will be more qualified doctors in rural areas C><<0VhU
B. there will be an even more serious imbalance of the number of rural and W&fW5af9
urban doctors
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C. country doctors are competitive in breaking medical records V_)5Af3wY
D. more patients will go to rural areas for medical treatment l 'AK
25. The paragraph following the text would probably discuss . Cfv L)f
A. problems of urban doctors c!'A)JD@
B. other solutions to improve the present situation fhBO~o+K>
C. research in medical science *r)zBr
D. reduction of staff in rural hospitals \_*?R,$3Y,
Questions 26 to 30 are based on the following passage. |i,zY{GI+2
Bacteria are extremely small living things. While we measure our own sizes in R&u)=~O\5
inches or centimeters, bacterial size is measured in microns. O ne micron is a J6@(X8w{j
thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped QLn5#x~xb
bacteria are usually from two to four microns long, while rounded ones are generally O:oU`vE
one micron in diameter. Thus, if you enlarged a rounded bacterium a thousand times, u+2xrzf
it would be just about the size of a pinhead. An adult human magnified by the same ^@|<'g.R-
amount would be over a mile (1.6 kilometers) tall. #}[Sj-Vp
Even with an ordinal microscopy, you must look closely to see bacteria. Using a )0Y #-=.<
magnification of 100 times, one finds that bacteria are barely visible as tiny rods or 2]of SdM
dots. One cannot make out anything of their structure. Using special stains, one can kcq9p2zKv
see that some bacteria have attached to them wavy-looking “hairs” called flagella. Bo](n*i
Others have only one flagellum. The flagella rotate, pushing the bacteria through the f"5lOzj`C
water. Many bacteria lack flagella and cannot move about by their own power, while WL
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others can glide along over surfaces by some little-understood mechanism. EuKrYY]
g
From the bacterial point of view, the world is a very different place from what it is 7AGZu?1]M
to humans. To a bacterium, water is as thick as molasses is to us. Bacteria are so small m6~ sKJV
that they are influenced by the movements of the chemical molecules around them. \j2:
6]Hm
Bacteria under the microscope, even those with no flagella, often bounce about in "v\ bMuS
the water. This is because they collide with the water molecules and are pushed this n&2=6$*,k
way and that. Molecules move so rapidly that within a tenth of a second the molecules 'mBLf&fB
around a bacterium have all been replaced by new ones; even bacteria without flagella "xvV'&lQ
are thus constantly exposed to a changing environment. _H^^2#wc/
26. Which of the following is the main topic of the passage? N[+o[%A
A. The characteristics of bacteria <eud#v
B. How bacteria reproduce KV^:sxU
C. The various functions of bacteria +H)!uLvaB
D. How bacteria contribute to disease ^td!g1"<
27. Bacteria are measured in __________. k$$S!qi#
A. Inches ;*>QG6Fh
B. Centimeters W[[YOK1T
C. Microns GM9]>"#o\
D. millimeters wa(Wit"-
28. Which of the following is the smallest? evndw>
A. A p inhead T0*TTB&b
B. A rounded bacterium 6S! lD=
C. A microscope , IMT '*
D. A rod-shaped bacterium W{$+mow7S
29. According to the passage, someone who examines bacteria using only a XqE55Jclp
microscope that magnifies 100 times would see ___________. eBSn1n
A. tiny dots r$3~bS$]
B. small “hairs” fr,CH{Uq
C. large rods <750-d!
D. detailed structures :nbW.B3GV
30. The relationship between a bacterium and its flagella is most nearly analogous to QAOk
which of the following? O
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A. A rider jumping on a horse’s back 0()9vTY+
B. A ball being hit by a bat RqX4ep5j
C. A boat powered by a motor R^u^y{ohr
D. A door closed by a gust of wind. 4Ow
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Questions 31 to 35 are based on the following passage. [r/Seg"
Although, recent years have seen substantial reductions in noxious pollutants from kGBl)0pr`x
individual motor vehicles, the number of such vehicles has been steadily increasing. {C0OrO2:
Consequently, more than 100 cities in the United States still have levels of carbon 6q
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monoxide, particulate matter, and ozone (generated by photochemical, reactions with Fb<\(#t
hydrocarbons from vehicle exhaust) that exceed legally established limits. There is a r
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growing, realization that the only effective way to achieve, further reductions in Z#cU#)`y1
vehicle emissions-short of a massive shift away from the private automobile-is to
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replace conventional diesel fuel and gasoline with cleaner burning fuels such as 5f`XFe$8
compressed natural gas liquefied petroleum gas, ethanol, or methanol. Nh7!Ah
All of these alternatives are carbon-based fuels whose molecules are smaller and |z<wPJ,;2
simpler than those of gasoline. These molecules burn more cleanly than gasoline, in ae(]9 VW
part because they have fewer, if and, carbon-carbon bonds, and the hydrocarbons they -I$tx
a/"|
do emit are less likely to generate ozone. The combustion of large molecules, which _I
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have multiple carbon-carbon bonds, involves a more complex series of reactions. -5-SlQu
These reactions increase the probability of incomplete combustion and are more likely iDkWW
to release uncombusted and photochemically active hydrocarbon compounds into the o j4)7{
atmosphere. O n the other hand, alternative fuels do have drawbacks. Compressed G'}_ZUy#
natural gas would require that vehicles have a set of heavy fuel tanks-a serious fdH'z:Xao
liability in terms of performance and fuel efficiency and liquefied petroleum gas faces pt|$bU7
fundamental limits on supply. )'I<xx'
1
Ethanol and methanol, on the other hand, have important advantages over other m{y
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carbon-based alternative fuels; they have hither energy content per volume and would Nxs%~wZ
require minimal changes in the existing network for distributing motor fuel. Ethanol is `zsk*W1GA
commonly used as a gasoline supplement, but it is currently about twice as expensive -{amzyvLE
as methanol, the low cost of which is one of its attractive features. Methanol’s most ?28GQyk4
attractive feature, however, is that it can reduce by about 90 percent the vehicle q2U"k
emissions that form ozone, the most serious urban air pollutant. +&zuI
Like any alternative fuel, methanol has its critics. Yet much of the criticism is o >4>7
based on the use of “gasoline clone” vehicles that do not incorporate even the simplest ORPl^n-
design improvements that are made possible with the use of methanol. It is true, for |(w#NE5
example, that a given volume of methanol provides only about one-half of the energy SFPIr0 u
that gasoline and diesel fuel do; other things being equal, the fuel tank would have to X'Il:SK
be somewhat larger and heavier. However, since methanol-fueled vehicles could be OsSiBb,W79
designed to be much more efficient than “gasoline clone” vehicles fueled with U
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methanol, they would need comparatively less fuel. Vehicles incorporating only the GDQg:MgX
simplest of the Engine improvements that methanol makes feasible would still C%o/
contribute to an immediate lessening of urban air pollution. Jz8#88cY
31. The author of the passage is primarily concerned with __________. WoG
A. countering a flawed argument that dismisses a possible solution to a problem. =xWW+w!r
B. reconciling contradictory points of view about the nature of a problem. (2(;u1
C. identifying the strengths of possible solutions to a problem. ..{^"`FQ
D. discussing a problem and arguing in favor of one solution to it. EBE>&{%$^
32. According to the passage, incomplete combustion is more likely to occur with 0$h$7'a
gasoline than with an alternative fuel because: __________. (eIxU&o'
A. the combustion of gasoline releases photochemically active hydrocarbons. MZMv.OeYt,
B. the combustion of gasoline involves an intricate series of reactions. 1`J
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C. gasoline molecules have a simple molecular structure. tJfN6
D. gasoline is composed of small molecules. g#nsA(_L
33. The passage suggests which of the Following about air pollution? -@?>nLQb
A. Further attempts to reduce emissions from gasoline-fueled vehicles will not KFG^vmrn
help lower urban air-pollution levels. `l40awGCz
B. Attempts to reduce the pollutions that an individual gasoline-fueled vehicle c)~|#v
emits have been largely unsuccessful. s/|'1E\F
C. Few serious attempts have been made to reduce the amount of pollutants \V\ET
emitted by gasoline-fueled vehicles. =U|SK"oO
D. Pollutants emitted by gasoline-fueled vehicles are not the most critical source aVL%-Il}
of urban air pollution. Mo
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34. The author describes which of the following as the most appealing feature of .tZ$a_O
methanol? z]_CFo1'l
A. It is substantially less expensive than ethanol. {%}6d~Bg
B. It could be provided to consumers through the existing motor fuel distribution Z'M@DY/fdK
system. GgZf6~b1J
C. It has a higher energy content than other alternative fuels. WuXRL}!\,
D. Its use would substantially reduce ozone levels. @D{[Hj`<
35. It can be inferred that the author of the passage most likely regards the criticism IUG.q8
of methanol in the last paragraph as __________. `G{t<7[[;
A. flawed because of the assumptions on which it is based. ds[~Cp
B. inapplicable because of an inconsistency in the critics’ arguments. %?wE/LU>
C. misguided because of its exclusively technological focus. YH$`r6\S
D. invalid because it reflects the personal bias of the critics. g-uFss
Questions 36 to 40 are based on the following passage. N/.9Aj/h~&
Tests of reaction times seemed to back up the notion that the two hemispheres Ghe=hhZ
differed in their processing styles. Researchers used to believe that an image goes to ~qxc!k!w4
one hemisphere first, and then to the opposite side of the brain. If the nature of the t')I c6.?i
stimulus and the preference of the hemisphere match up, then the person can respond {(Z1JoSl
slightly more quickly and accurately in identifying the local or global image.
@35]IxD
Still more startling, researchers found that the same appeared to hold for the brains w-/Tb~#E
of chimps and perhaps other primates. The assumption has always been that %%u4('=
handedness and brain asymmetry are strictly human traits---part of the great brain '1
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reorganization that allowed our ancestor to use tools, speak and perhaps even think .=D6<4#t
rationally. But handedness is now widely claimed for primates and even birds, r73Xh"SL
amphibians and whales. And in the past few years, some psychologists have tested Q5ao2-\
chimps and baboons and suggested their two hemispheres also differ in processing VW/1[?HG5
style. 9`b3=&i\
Now researchers have come to see the distinction between the two hemispheres as ? 'nMZ
a subtle one of processing style, with every mental faculty shared across the brain, and 5$w1[}UUd
each side contributing in a complementary, not exclusive, fashion. A smart brain @n3PCH6:Ao
became one that simultaneously grasped both the foreground and the background of RUO6Co-
the moment ~yg9ZM
The next problem was to work out exactly how the brain manages to produce dY^~^<{Lj
these two contrasting styles. Many researchers originally looked for the explanation in q3t@)+l>*
a simple wiring difference within the brain. This theory held that neurons in the left ==9Ez
cortex might make sparse, short-range connections with their neighbors, while cells V00zk`PH
on the other side would be more richly and widely connected The result would be that <z PyID`
the representation of sensations and memories would be confined lo smallish, discrete %-.GyG$i
areas in the left hemisphere, while exactly the same input to a corresponding area of e V#H"fM
the right side would form a sprawling even impressionistic pattern of activity. !LA#c'
Supporters of this idea argued that these structural differences would explain why O5w\oDhMb
left brain language areas are so good at precise representation of words and word $6[]c)(
sequences while the right brain seems to supply a wider sense of context and meaning. `Hqu2
'`
A striking finding from some people who suffer right-brain stokes is that they can w6tY6bf}
understand the literal meaning of sentences-their l eft brain can still decode the #;)7~69
words-- -but they can no longer get jokes or allusions. Asked to explain even a s Y,3
common proverb, such as “a stitch in time saves nine”, they can only say it must have 'S\H% -
something to do with sewing. An intact right brain is needed to make the more playful 4+0Zj+
q";
connections. Y;WrfO$J
36. The local or global image is more quickly and accurately identified in the brain *Bj G3Jc5
if _______. t
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A. tests of reaction times back up the notion of the two hemispheres {u5@Yp
B. an image goes to one hemisphere first, and then to the opposite side of the 6r`g+Js/
brain :d;5Q\C`
C. the nature of the stimulus and the preference of the hemisphere match up :>;#/<3{
D. the person can match the image with an object OkM>
37. Handedness and brain asymmetry are strictly human traits, as is shown in ~Hq
2'
________. Z'~5L_.]Ai
A. the brains of chimps and perhaps other primates pfG:PrZ
B. the fact that the great brain reorganization allowed our ancestor to use tools {XAKf_Cg
C. the fact that human beings alone can use tools, speak and think rationally -p1arA
D. the two brain hemispheres of chimps and baboons 6m]L{ buP
38. According to the text, a smart brain has all the following characteristics xiiZ'U
EXCEPT _________. !dGgLU_
A. with different processing style 6\`,blkX
B. with shared mental faculty
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C. each side contributing in a complementary %+.]>''a
D. grasping the foreground and the background of the moment _ n>0!
39. What is the problem of the people who suffer right-brain strokes? .'4
*'i:
A. They can hardly understand the literal meaning of sentences. 4-\a]"c
B. Their left brain can still decode the words. nD_g84us
C. They do not understand the common proverb “a stitch in time saves nine”. ;RrfE8mGj
D. They cannot grasp the meaning of jokes or allusions. `yhL11]~
40. The best title for the text may be __________. F'K{=
A. Left Brain, Right Brain 9}4L8?2
B. The Local of Global Image i|<*EXB"
C. Human Brain and Animal Brain 4]cOTXk9C
D. The Smart Brain =($qiL'h
Questions 41 to 45 are based on the following passage. rScmUt
(此文不全) j>6{PDaT
The Du Pont Company, the 13th largest employer in the U.S., routinely gives N\p3*#M
pre-employment blood tests to all blacks who apply for jobs to determine who might UkdQ#b1
be a carrier of the trait for sickle-cell anemia, even though the trait is regarded as 3 3V/<v
largely harmless. Although there are other genetically transmitted blood diseases and Pvtf_Qo^
metabolic disorders that predominate in racial or ethnic groups, blacks are the only a+X X?uN{
ones to be identified with a disease and examined for it at Du Pont. In a three month 4fN<pG,
study of genetic screening in the American lace, the New York Times found no kqyY:J
other instance of an ethnic or racial group singled out in or company. ]t,ppFC#
Du Pont officials emphasize that the sickle trait tests do not represent discrimination 6S<pWR~
and are only an effort to help them avoid potentially harmful exposure to certain @M(vaJB8u
chemicals. Yet the officials can offer no firm evidence that the trait -- not the disease, /g_}5s-Z
but only a single abnormal gene -- makes blacks more vulnerable. ]6%| L
Du Pont, which employs well over 100,000 workers, is in the vanguard of American #R)$nv:h?^
companies doing genetic screening and thus is at the center of the debate over this Q{>{ e3z}
area of science, debate so intense, so broad, that even medical directors from other Tx!mW-Lt
companies who believe possibilities of genetic screening want no part of it. At rUj]6j
=e
least, not now but officials at Du a leader in the chemical industry with annual 4WNWn#M
gross sales of more than $ 10 billion, feel they have the money and the scientists to nY6^DE2f
turn the distrust into achievement. If some chemicals are highly toxic and the ?gTY!;$P
workplace is less than pure, company officials reason, it is only logical to try to 9XS'5AXN
determine why some workers get sicker faster and why others seem to have more VG)kPKoi
tolerance for industrial poisons. And so the company is looking beyond the skills and lwa
loyalty of its workers to ery genetic structure. w,^!kO0)~8
The sickle-cell trait is not the same as sickle-cell anemia. The anemia is rare but JD,/oL.KA
debilitating disorder found in fewer than 50,000 American blacks, about two-tenths of }VyDX14j
a percent of the black population. Perhaps two million other blacks are carriers of h_H$+!Nzb
the trait -- they are heterozygous; that ing a gene for sickle-cell 3C5<MxtK
anemia from one parent. Virtually all the carriers can lead very active lives and show 'b%S3)}
no symptoms of the disease. d?'q(6&H
41. What does the author say about Du Pont? I>:M1Yc0
A. It examined the blood of some blacks - wCfwC
B. It examined some blacks for their knowledge of blood. W*N^G p@
C. It discovered that some blacks have blood illness. 10t9Qv/
D. It discovered the blood of some blacks containing industrial chemicals. #pLd';
42. What do Du Pont officials say? cR_85
A. They are trying to protect blacks form health threats. [$f
B. They can prove that blacks are likely to have health problems. fsb
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C. They regard the skills of workers as the most important matter. d'q,:="c
D. They hope that other companies can follow their example. QF
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43. What is true about genetic screening? Wu?4oF
A. It often aims at black employees. 83e{rcs
B. Its focus is often on sickle-cell anemia. Fn1|Wt
*
C. Some companies do not want to do it. \= =rdW-
D. The US government strongly supports it. .3M=|rE
44. The underlined word “toxic” in the third paragraph probably means _____. { LZ` _1D
A. powerful. @WED
XB
B. complex. z^'3f!:3
C. thick. 1#/>[B
D. poisonous. wak_^8x
45. What can we learn about the carriers of sick-cell trait? s8Bbet
A. Their number is about 50,000. `2.[8%6
B. They usually seem to have normal lives. _vr>-
:G
C. They include over half of the black population. &>,c..Ke
D. They do not seem to be affected by industrial chemicals. !#
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Questions 46 to 50 are based on the following passage. Wo+fMn(O
Teenagers are spending more money than ever. Just last year, 31.6 million teens /?C}PM
spent 155 billion, according to the Northbrook, Illinois-based market research group bVO{,P2o
Teenage Research Unlimited. Much of that money, of course, comes from parents. VB=$D|Ll
Shocked at how much money kids spend? Maybe you haven’t cheeked the price V $Y=JK@
tags lately on some of the younger generation’s must-haves. VI_8r5o
To some, such extravagant spending on the notoriously fickle young might seem 1g<jr.
outrageous. Why do some parents give in? N/CL?Z>c
One factor is surely the sheer power of marketing through mass media. According F`))qCgg]
to the group Adbusters, teenagers are exposed to an estimated 3,000 advertisements QmxI;l
each day. Combine the ads with programming itself, like the fashion-, music-,and s
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skin-filled shows on MTV and y o u’ve got a barrage of messages telling kids what they *5T^wZpj)
should own if they want to fit in. K;)(fc
“The pressures on parents today are enormous,” says Tom Vogele, a single father &p