西南大学博士入学考试英语试题(2012) F02TM#Zi
Part I Vocabulary (10 points) ~uZ9%UB_m
Directions: In this part there are 20 incomplete sentences. For each sentence there P, l
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are four choices marked A, B, C and D. Choose the one that best completes the ~Y*.cGA
following sentences. Then blacken the corresponding letter on the Answer Sheet ;y@zvec4
1. A broadcasting station will sometimes to its listeners a programme which !]A/ID0K
it has received from another station. |IzL4>m:;
. .-&
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A. rely B. relay C. relate D. reside Y:m8UnT
2. The United Nations Conference on Drug Abuse, which took place earlier this year o~9*J)X5i
in Vienna, was a very meeting. Ti0kfjhX7
A. productive B. overwhelming C. compulsory D. protective bDh4p]lm
3. A person who studies ___ learns how to express numbers approximately and <kwF<J
how to calculate ratios and averages. _:tS-Mx@5
A. static B. statistic C. statistics D. status A=|a!N/
4. If you ______ someone, you form a fixed general idea or image of them so that G,Eh8HboK
you assume that they will behave in a particular way. l?J
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A. assimilate B. simulate C. stereotype D. subordinate uTrzC+\aU
5. Reading ______ the mind only with materials of knowledge, it is thinking that Y`-q[F?\y
makes what we read ours. #EE<MKka
A. rectifies B. prolongs C. furnishes D. minimizes :]Om4Q\-#
6. Satellite communications are so up-to-date that even when _____ in the middle []
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of the Pacific, businessman can contact their offices as if they were next door. _1$ Y\Y
A. gliding B. cruising C. piloting D. patrolling IV':sNV
7. Now a paper in Science argues that organic chemicals in the rock come mostly hH;i_("i(h
from _______ on earth rather than bacteria on Mars. $[MAm)c:]{
A. configuration B. constitution C. condemnation D. contamination oSy9Xw
8. Scientists, who are now aware of how nautiluses regulate their buoyancy, have BSd.7W;cS=
been able to dispel ideas about these creatures. AOcUr)
A. erroneous B. misdemeanors C. misgivings D. misdirection I D-I<Ev
9. History has demonstrated that countries with different social systems and \?8q&o1=]
ideologies can join hands in meeting the common challenges to human _____ and eA
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development. $w-@Oa*h9U
A. evolution B. survival C. rivalry D. dignity Ujvm|ml
10. To avoid an oil shortage, we should advocate that more machines must _____ of Tl-%;X
<X
life in a short time, and this made others astonished. =<aFkBX-
(原题有误) !m'Rp~t
A. accelerate B. operate C. generate D. utilize DXO'MZon3
11. Japanese leaders aboard the U. S. battleship Missouri and signed the ____ LXrk5>9
surrender, which ended World War Two in 1945. KXcRm)
A. conditional B. infinite C. everlasting D. unconditional mO TA
12. It is a _____ that in such a rich country there should be so many poor people who r#w 7qEtD
could hardly keep their body and soul together. En&gI`3n
A. hypothesis B. paradox C. conflict D. dispute RK$(
13. The _____ effects of many illnesses made him a weak man and he still didn’t Rm$( X5x>o
want to do sports every day. !>Q\Y`a,*
A. cumulative B. formidable C. eternal D. prospective ? }`mQ <~
14. The robbers broke into the bank, _____ the clerics with revolvers and forced them YG0b*QBY~
to give money just as they were about to knock off. OBF-U]?Y
A. shot B. frightened C. amused D. menaced N;>s|ET
15. This pair of boots cost much less than yours for I bought them when the .~rg#*]^
department store made a _____ of the stored goods. P (Y\l
A. clearance B. reduction C. fortune D. deal 4N7|LxNNl_
16. Technology has _____ the sharing information and the storage and delivery of WI&}94w
information, thus making more information available to more people. >/%XP_q%`e
A. formulated B. facilitated C. furnished D. functioned RVs=s}|>*
17. Language, culture and personality may be considered _____ of each other I thought, % hH> %
but they are inseparable in fact. T;PLUjp}
A. indistinctly B. separately C. irrelevantly D. independently }:J-o
18. More than 85 percent of French Canada’s population speaks French as a mother pY\=f0]
tongue and _____ to the Roman Catholic faith. ,zK E$
A. caters B. adheres C. ascribes D. subscribes rp[3?-fk
19. There are not many teachers who are strong _____ of traditional methods in $2}%3{<j
English teaching. &=:3/;c
A. sponsors B. contributors C. advocates D. performers pNmWBp|ER
20. The ______ of the scientific attitude is that the human mind can succeed in 7i#/eRui
understanding the universe. $
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A. essence B. content C. texture D. threshold IAe/)
Part II Reading Comprehension (30 points) ~0?B
Directions: PqF&[
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Questions 21 to 25 are based on the following passage. dq'f
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There are 6 reading passages in this part. Each passage is followed by %p&y/^=0I
some questions or unfinished statements. For each of them there are four choices E8p,l>6(f
marked A, B, C and D. you should decide on the best choice and mark your answer on Unb3
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the Answer Sheet. %9S0!h\
Spread across the United States are about 500,000 doctors, cheeked by jowl, in the 9zIqSjos"
big cities and thin on the ground in isolated small towns. In June 1986, the secretary >&7^yXS
of health and human services, Dr. Otis Bowen, passed on a view of his experts: 5%-15% _G25$%/LU
of America’s 500,000 doctors should be candidates for disciplinary action, many of n"Bc2}{
them because of drug taking or alcoholism. Others give their patients poor care I:UDEoQo
because they are senile, incompetent, guilty of misconduct or out of touch with _z 5W*..
developments in medicine. Y}<%~z#.4
The granting, or withdrawal, of licenses to practice is in the hands of state medical Cz9MXb]B
boards, but they are overwhelmed with complaints and lack the money to handle even /m 7~-~$V
a fraction of them. Recently, however, things have been changing. In 1985, 406 Eciu^
doctors lost their licenses (compared with 255 in 1984), nearly 500 were placed on M:iH7K
probation and nearly 1,000 received reprimands or had their right to practice curtailed. WBm)Q#1:
The federal inspector general demanded, and won the right far the states and the 'U0W
federal government, which provide health care for the elderly and for the poor under urCTP.F
the Medicare and Medicaid programme, to refuse payment to the doctors considered /4+(e I7
unsatisfactory. ^M;#x$Y?
Yet putting these powers into practice is proving to be far from easy. O f the 35 O7uCTB+
doctors so far denied reimbursement from Medicare, almost all work in lightly "dvo@n|
populated rural areas. O n March 27th, their indignation and that of their patients were S9r+Nsn
a sympathetic hearing by the Senate Finance Committee. Rural doctors may not be as )4c?BCgy
up to date as those in the big towns, but they are often the only source of medical help CgYX^h?Y9
for miles around and their patients are loyal to them. Members of the review boards, X;l/D},.
which are paid by the government, insist, however, that elderly and poor people V'MY+#
should not be forced to receive (and the state to pay for) inferior care. yTZo4c"
An innovation is on the horizon in Texas, the most under-doctored state in the DX+zK'34
country (with only one doctor for every 1,100 residents). Lubbock University is Q>rr?L`
setting up a computer network that will enable country doctors to obtain medical 0_MtmmL.
expertise and access to medical records in a hurry. The aim is to reduce the isolation a_?b<
of the country doctors and thus, in the long run, to attract more young doctors to rural : T7(sf*!*
areas. Qx8(w"k*
21. The main topic of the passage is . p:W]
A. the present situation of American doctors v}d)uPl};
B. the legislation on rural medical services 6y MZ2%
C. the problems of country doctors and possible solutions e6J^J&`|4
D. some factors of disqualification of country doctors 0.w7S6v|&
22. According to the text, disciplinary action should be taken against those who ,u PcQ
give patients poor care because of the following reasons EXCEPT . voN~f>
A. taking drugs and drinking alcohol 0< vJ*z|_
B. feeling remorse of their bad behavior g<.Is
V
C. being professional unskillful |('o g *$
D. being sick and conservative '@Rk#=85Z
23. Which of the following is true about the unfit doctors? 6l;2kztGp
A. 1,500 doctors were deprived of the right to practice medicine. @p
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B. The federal government has got the right to deny reimbursement to those Xo/H+[;X
unqualified doctors. N!3Tg564j
C. Almost all the doctors who fail to get payment from Medicare work in F@f4-NR>
densely populated urban areas. 3]mprX'
D. Patients in the rural areas complain about the poor treatment their doctors ]7
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give them. NjOUe?BQ
24. It can be inferred from the text that in the near future . 6uFw+Ya#
A. there will be more qualified doctors in rural areas 1Kk6nUI
N
B. there will be an even more serious imbalance of the number of rural and %'2.9dB
urban doctors YI,t{Wy
C. country doctors are competitive in breaking medical records m}s.a.x
D. more patients will go to rural areas for medical treatment jga \Ry=nw
25. The paragraph following the text would probably discuss .
;(Ug]U%3_
A. problems of urban doctors lMvOYv
B. other solutions to improve the present situation fP|[4 ku
C. research in medical science @GQfBV
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D. reduction of staff in rural hospitals Rq5'=L
Questions 26 to 30 are based on the following passage. CMW4Zqau*
Bacteria are extremely small living things. While we measure our own sizes in HC6U_d1-6
inches or centimeters, bacterial size is measured in microns. O ne micron is a 4F#H$`:[
thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped 9Sxr9FLW~
bacteria are usually from two to four microns long, while rounded ones are generally <Q9l'u]3$c
one micron in diameter. Thus, if you enlarged a rounded bacterium a thousand times, ?`Yu~a{
it would be just about the size of a pinhead. An adult human magnified by the same (is' ,4^b
amount would be over a mile (1.6 kilometers) tall. HdqB B
Even with an ordinal microscopy, you must look closely to see bacteria. Using a qsep9z.
magnification of 100 times, one finds that bacteria are barely visible as tiny rods or c.IUqin
dots. One cannot make out anything of their structure. Using special stains, one can U+x^!
{[/
see that some bacteria have attached to them wavy-looking “hairs” called flagella. 8O
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Others have only one flagellum. The flagella rotate, pushing the bacteria through the OA&'T*)-A6
water. Many bacteria lack flagella and cannot move about by their own power, while Zpkd8@g@
others can glide along over surfaces by some little-understood mechanism. 7 mCf*|
From the bacterial point of view, the world is a very different place from what it is ,Zn6T"[$
to humans. To a bacterium, water is as thick as molasses is to us. Bacteria are so small >
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that they are influenced by the movements of the chemical molecules around them. HfVHjF)
Bacteria under the microscope, even those with no flagella, often bounce about in z!3=.D
the water. This is because they collide with the water molecules and are pushed this o{,IO!q
way and that. Molecules move so rapidly that within a tenth of a second the molecules IAH"vHM
around a bacterium have all been replaced by new ones; even bacteria without flagella f%o[eW#
are thus constantly exposed to a changing environment. qhGz2<}_j
26. Which of the following is the main topic of the passage? O3o^%0
A. The characteristics of bacteria kJ5z['4?
B. How bacteria reproduce E,Rj;?
C. The various functions of bacteria M/p9 I
gp
D. How bacteria contribute to disease tVAo o-%
27. Bacteria are measured in __________. L8h3kT
A. Inches &6vaLx
B. Centimeters ]!{S2x&"
C. Microns I:TbZ*vi~
D. millimeters W94:%
28. Which of the following is the smallest? ^\ x'4!W
A. A p inhead OK80-/
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B. A rounded bacterium 1@L18%h
C. A microscope P_A@`eU0
D. A rod-shaped bacterium Nj4CkMM[3
29. According to the passage, someone who examines bacteria using only a ~ZVz
sNrx
microscope that magnifies 100 times would see ___________. l%EvXdZuOy
A. tiny dots /*y5W-'d^
B. small “hairs” ^yPZ$Q
C. large rods 5FR#CQ
D. detailed structures XZKlE
F?
30. The relationship between a bacterium and its flagella is most nearly analogous to Kz42AC
which of the following? Np+PUu>
A. A rider jumping on a horse’s back i6KfH\{N
B. A ball being hit by a bat v>wN
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C. A boat powered by a motor }8 z:L<
D. A door closed by a gust of wind. /3aW 0/^o
Questions 31 to 35 are based on the following passage. u$R5Q{H_
Although, recent years have seen substantial reductions in noxious pollutants from 1@p,
individual motor vehicles, the number of such vehicles has been steadily increasing. \~*<[.8~
Consequently, more than 100 cities in the United States still have levels of carbon 6
^3RfF^W
monoxide, particulate matter, and ozone (generated by photochemical, reactions with 7{}E{/
hydrocarbons from vehicle exhaust) that exceed legally established limits. There is a U}jGr=tu
growing, realization that the only effective way to achieve, further reductions in Z}$sY>E
vehicle emissions-short of a massive shift away from the private automobile-is to c7r(&h
replace conventional diesel fuel and gasoline with cleaner burning fuels such as |2l-s 1|
y
compressed natural gas liquefied petroleum gas, ethanol, or methanol. .JLJ(WM
All of these alternatives are carbon-based fuels whose molecules are smaller and 44*#qLN
simpler than those of gasoline. These molecules burn more cleanly than gasoline, in O(W"QY
part because they have fewer, if and, carbon-carbon bonds, and the hydrocarbons they xJ$uoy3+
do emit are less likely to generate ozone. The combustion of large molecules, which N]
sbI)Z@
have multiple carbon-carbon bonds, involves a more complex series of reactions. Y|LL]@Lv
These reactions increase the probability of incomplete combustion and are more likely f`
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to release uncombusted and photochemically active hydrocarbon compounds into the u"qu!EY2
atmosphere. O n the other hand, alternative fuels do have drawbacks. Compressed "a[;{s{{.
natural gas would require that vehicles have a set of heavy fuel tanks-a serious
67rY+u%
liability in terms of performance and fuel efficiency and liquefied petroleum gas faces U6/7EOW,
fundamental limits on supply. <=n;5hv:
Ethanol and methanol, on the other hand, have important advantages over other p"hO6b%V
carbon-based alternative fuels; they have hither energy content per volume and would Xq$-&~
require minimal changes in the existing network for distributing motor fuel. Ethanol is 4JK6<Pk
commonly used as a gasoline supplement, but it is currently about twice as expensive +zMhA p
as methanol, the low cost of which is one of its attractive features. Methanol’s most Ij(<(y{?Q1
attractive feature, however, is that it can reduce by about 90 percent the vehicle P{)D_Bi
emissions that form ozone, the most serious urban air pollutant. $Xwk8<
Like any alternative fuel, methanol has its critics. Yet much of the criticism is V5lUh#@TN&
based on the use of “gasoline clone” vehicles that do not incorporate even the simplest c(=>5
design improvements that are made possible with the use of methanol. It is true, for PFp!T [)
example, that a given volume of methanol provides only about one-half of the energy Sk5
3Lc
that gasoline and diesel fuel do; other things being equal, the fuel tank would have to d\#yWY
be somewhat larger and heavier. However, since methanol-fueled vehicles could be 9R$$(zB 1;
designed to be much more efficient than “gasoline clone” vehicles fueled with X >7Pqn'
methanol, they would need comparatively less fuel. Vehicles incorporating only the ^4`x:6m
simplest of the Engine improvements that methanol makes feasible would still $E
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E
contribute to an immediate lessening of urban air pollution. &qWg$_Yh
31. The author of the passage is primarily concerned with __________. ,5zY1C==Ut
A. countering a flawed argument that dismisses a possible solution to a problem. sd\}M{U
B. reconciling contradictory points of view about the nature of a problem. 0E#??gN
C. identifying the strengths of possible solutions to a problem. ?M'CTz}<\
D. discussing a problem and arguing in favor of one solution to it. eWqS]cM#
32. According to the passage, incomplete combustion is more likely to occur with JYNnzgd
gasoline than with an alternative fuel because: __________. !PoyM[Z"f
A. the combustion of gasoline releases photochemically active hydrocarbons. di_UJ~
B. the combustion of gasoline involves an intricate series of reactions. vfqXHc
unj
C. gasoline molecules have a simple molecular structure. oU1N>,
D. gasoline is composed of small molecules.
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33. The passage suggests which of the Following about air pollution? Ydsnu
A. Further attempts to reduce emissions from gasoline-fueled vehicles will not H$ nzyooh
help lower urban air-pollution levels. >AV9 K
B. Attempts to reduce the pollutions that an individual gasoline-fueled vehicle g.Ur~5r
emits have been largely unsuccessful. /
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C. Few serious attempts have been made to reduce the amount of pollutants qDGx(d
emitted by gasoline-fueled vehicles. 0UpRSh)#
D. Pollutants emitted by gasoline-fueled vehicles are not the most critical source +xIVlH9`Q
of urban air pollution.
VB/75xK_
34. The author describes which of the following as the most appealing feature of I[Bp}6G
methanol? |b@`ykD
A. It is substantially less expensive than ethanol. uq6>K/~D
B. It could be provided to consumers through the existing motor fuel distribution Kc]
GE#~g
system. ^Mm%`B7W
C. It has a higher energy content than other alternative fuels. 9r\p4_V
D. Its use would substantially reduce ozone levels. 85"Szc-#
35. It can be inferred that the author of the passage most likely regards the criticism -"yma_
of methanol in the last paragraph as __________. b6e2a/x
A. flawed because of the assumptions on which it is based. <AVWT+,
B. inapplicable because of an inconsistency in the critics’ arguments. [D|Uwq
C. misguided because of its exclusively technological focus. tWZ8(E$
D. invalid because it reflects the personal bias of the critics. ?jO<<@*2S
Questions 36 to 40 are based on the following passage. f~?5;f:E
Tests of reaction times seemed to back up the notion that the two hemispheres f
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differed in their processing styles. Researchers used to believe that an image goes to %j2 :W\g:
one hemisphere first, and then to the opposite side of the brain. If the nature of the KxmB$x5-=8
stimulus and the preference of the hemisphere match up, then the person can respond "OP$n-*@%
slightly more quickly and accurately in identifying the local or global image. @B+8' b$9
Still more startling, researchers found that the same appeared to hold for the brains 1(aib^!B
of chimps and perhaps other primates. The assumption has always been that ak}ke
handedness and brain asymmetry are strictly human traits---part of the great brain R,!aX"]|
reorganization that allowed our ancestor to use tools, speak and perhaps even think A{{rN
bCK
rationally. But handedness is now widely claimed for primates and even birds, *Q-uE
amphibians and whales. And in the past few years, some psychologists have tested suX^"Io%!
chimps and baboons and suggested their two hemispheres also differ in processing k fOd|-
style. }i;!p
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Now researchers have come to see the distinction between the two hemispheres as 3gCP?%R
a subtle one of processing style, with every mental faculty shared across the brain, and ^7kYG7/
each side contributing in a complementary, not exclusive, fashion. A smart brain `+(JwQC4
became one that simultaneously grasped both the foreground and the background of $xcU*?=K
the moment >\Iy <M
The next problem was to work out exactly how the brain manages to produce >tkU+$;-
these two contrasting styles. Many researchers originally looked for the explanation in rt! lc-g%/
a simple wiring difference within the brain. This theory held that neurons in the left K]U8y$^
cortex might make sparse, short-range connections with their neighbors, while cells L~M6ca"
on the other side would be more richly and widely connected The result would be that (j)>npOd9
the representation of sensations and memories would be confined lo smallish, discrete #Nv0d|0\
areas in the left hemisphere, while exactly the same input to a corresponding area of M)nf(jw#G
the right side would form a sprawling even impressionistic pattern of activity. b\"2O4K,)
Supporters of this idea argued that these structural differences would explain why B&lF!
]
left brain language areas are so good at precise representation of words and word rI]n4>k{
sequences while the right brain seems to supply a wider sense of context and meaning. ;cZ]^kof
A striking finding from some people who suffer right-brain stokes is that they can KMkX0+Ao
understand the literal meaning of sentences-their l eft brain can still decode the u $T'#p1
words-- -but they can no longer get jokes or allusions. Asked to explain even a A.S:eQvS%
common proverb, such as “a stitch in time saves nine”, they can only say it must have ~gbq^
something to do with sewing. An intact right brain is needed to make the more playful w W;!L=j
connections. /aMeKM[L`
36. The local or global image is more quickly and accurately identified in the brain ]?2&d[
if _______. D)LqkfJ}z^
A. tests of reaction times back up the notion of the two hemispheres $Xo_C_:B
B. an image goes to one hemisphere first, and then to the opposite side of the DU[vLe|Z
brain %xI,A '#
C. the nature of the stimulus and the preference of the hemisphere match up ~%:23mIk
D. the person can match the image with an object ZTSNM)f
37. Handedness and brain asymmetry are strictly human traits, as is shown in ]2B=@V t,
________. faaFm
EC
A. the brains of chimps and perhaps other primates ,U/
ZG|=v
B. the fact that the great brain reorganization allowed our ancestor to use tools owc#RW9 7
C. the fact that human beings alone can use tools, speak and think rationally 3YPoObY
D. the two brain hemispheres of chimps and baboons s5ddGiZnBT
38. According to the text, a smart brain has all the following characteristics }M9L,O*^
EXCEPT _________.
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A. with different processing style vSy#[9}
B. with shared mental faculty
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C. each side contributing in a complementary 3 aG?^z
D. grasping the foreground and the background of the moment ;M"JN:J8
39. What is the problem of the people who suffer right-brain strokes? `!\`yI$!%w
A. They can hardly understand the literal meaning of sentences. @{!c [{x,T
B. Their left brain can still decode the words. [MKL>\U
C. They do not understand the common proverb “a stitch in time saves nine”. `PR)7}/<
D. They cannot grasp the meaning of jokes or allusions. n089tt=TE
40. The best title for the text may be __________. E=
Z.v
A. Left Brain, Right Brain SXA_P{j&a
B. The Local of Global Image )xuvY3BPB?
C. Human Brain and Animal Brain Zg/ra1n
D. The Smart Brain n`krK"Ii
Questions 41 to 45 are based on the following passage. u<l[S
(此文不全) C-abc+/
The Du Pont Company, the 13th largest employer in the U.S., routinely gives dk9'C
pre-employment blood tests to all blacks who apply for jobs to determine who might ~P85Or
be a carrier of the trait for sickle-cell anemia, even though the trait is regarded as *94<rlh{"
largely harmless. Although there are other genetically transmitted blood diseases and Eh)PZvH
metabolic disorders that predominate in racial or ethnic groups, blacks are the only E}d@0C:
ones to be identified with a disease and examined for it at Du Pont. In a three month r_f?H@ v
study of genetic screening in the American lace, the New York Times found no `)5E_E3
other instance of an ethnic or racial group singled out in or company. #%xzy@`
Du Pont officials emphasize that the sickle trait tests do not represent discrimination sF$$S/b
and are only an effort to help them avoid potentially harmful exposure to certain %(IkUD
chemicals. Yet the officials can offer no firm evidence that the trait -- not the disease, K"O+`2$
but only a single abnormal gene -- makes blacks more vulnerable. l.c*,9
Du Pont, which employs well over 100,000 workers, is in the vanguard of American 9H9 P'lx9
companies doing genetic screening and thus is at the center of the debate over this tO$/|B74Bz
area of science, debate so intense, so broad, that even medical directors from other VFj}{Y
companies who believe possibilities of genetic screening want no part of it. At >TT4;p h
least, not now but officials at Du a leader in the chemical industry with annual /G`'9cD
gross sales of more than $ 10 billion, feel they have the money and the scientists to ~.?,*q7
turn the distrust into achievement. If some chemicals are highly toxic and the {;6Yi!
workplace is less than pure, company officials reason, it is only logical to try to (,wIbwa
determine why some workers get sicker faster and why others seem to have more @7Oqp-
tolerance for industrial poisons. And so the company is looking beyond the skills and $[L~X
M
loyalty of its workers to ery genetic structure. N^\<y7x
The sickle-cell trait is not the same as sickle-cell anemia. The anemia is rare but SW!lSIk
debilitating disorder found in fewer than 50,000 American blacks, about two-tenths of }&+b\RE
a percent of the black population. Perhaps two million other blacks are carriers of tA2Py
the trait -- they are heterozygous; that ing a gene for sickle-cell e5/f%4YX
anemia from one parent. Virtually all the carriers can lead very active lives and show \':'8:E
no symptoms of the disease. A}Q6DHh26
41. What does the author say about Du Pont? .gL%0
A. It examined the blood of some blacks hXBAs*4DV8
B. It examined some blacks for their knowledge of blood.
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C. It discovered that some blacks have blood illness. {t<E*5N]a
D. It discovered the blood of some blacks containing industrial chemicals. ws1io.
42. What do Du Pont officials say? #aX+?z\4
A. They are trying to protect blacks form health threats. w;@NYMK)
B. They can prove that blacks are likely to have health problems. P%VEJ5,]b
C. They regard the skills of workers as the most important matter. hk6(y?#
D. They hope that other companies can follow their example. ]S@zhQ
43. What is true about genetic screening? ?VUU[h8"v5
A. It often aims at black employees. T_\Nvzb}
B. Its focus is often on sickle-cell anemia. Y fRjr
C. Some companies do not want to do it. " Y%fk/v8
D. The US government strongly supports it.
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44. The underlined word “toxic” in the third paragraph probably means _____. H(L.k;B
A. powerful. t zn1|
B. complex. ~e|RVY,
C. thick. ;Gc,-BDFw
D. poisonous. WC&V9Yk
45. What can we learn about the carriers of sick-cell trait? $('"0 @fg
A. Their number is about 50,000. Dj?84y
B. They usually seem to have normal lives. Pz\4#E]
C. They include over half of the black population. W&g