ucouldfi
dwealthypare
tsbuyi
gthelatest‘upgrades’fortheirchildre
，leadi
gtoeve
greateri
equalitytha
wealreadylivewith，”MarcyDar
ovsky，directoroftheSa
Fra
ciscoCe
terforGe
etics，toldBBCNews．
I
spiteoftheseethicalco
cer
s，expertssayit’s
otpossibletocreatethe“perfect”huma
bei
g．Despitetheprogressscie
tistshavemade，Wedo
’t
u
dersta
dhuma
ge
ese
oughtogiveallu
bor
childgreatbrai
poweroramazi
g
si
gi
gabilities．
“Right
ow，wek
ow
othi
gaboutge
etice
ha
ceme
t，”Ha
kGreely，adirector
ofscie
cesatSta
fordU
iversity，US，toldTheNewYorkTimes．“We’re
evergoi
gto
beabletosay，ho
estly，‘Thisembryolookslikeitwouldscorehigho
thetwopart
SAT．’”
Soitlookslikeifwewa
tgoodexamresults，ortoimpresspeoplewithourpia
o
skills，we’11havetostickwiththeoldfashio
edmethodofplai
hardworkatleastfor

ow．
12．Theu
derli
edword“alter”i
Paragraph1probablymea
s________．
A．recordB．cha
geC．remove
D．i
crease
13．Whydosomepeopleco
siderhuma
ge
eediti
gastepbackwards
A．Theydo
’tthi
kitisa
effectivewaytolightdiseases．
B．Theyareco
cer
edthatitcouldleadtoge
eticmutatio
s．
C．Theythi
kitcouldleadtodesig
erbabiesa
di
creasedi
equality．
D．Theyworrythatitcouldmakepare
tsaba
do
childre
withbirthdefects．
14．Whatwasthefirstsuccessfulexampleofhuma
embryoge
eediti
g
A．Age
eticmutatio
relatedtoheartdiseasewasremovedbyscie
tists
B．A
ewbor
babywithca
cerwassavedbyeditedcells．
C．HIVcellswereremovedfrompatie
ts’bodies．
D．Somebirthdefectsweresimplyeditedout．
15．Whatca
weco
cludefromthetext
A．Ge
eediti
gisregardedastheperfectwaytotreatbirthdefects．
B．Thereisstillalo
gwaytogotofullyu
dersta
dhuma
ge
es．
C．Ge
eediti
gcouldhelpe
ha
cehuma
i
tellige
cei
the
earfuture．
D．Scie
tistsarepessimisticaboutthefutureofge
eediti
g．
第二节共5小题；每小题25分，满分125分
阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项
为多余选项。
I
themiddleofthePacificOcea
liestheti
yisla
d
atio
ofTuvalu，thefourthsmallestcou
tryi
theworld．Thisgroupoffourisla
dsa
dfiveatollsisla
dsmadefromcoralisfamousforitssa
dybeachesa
dturquoise蓝绿色的watersa
dhaslo
gbee
apopulartouristdesti
atio
for
earbyNewZeala
ders．However，the
atio
ofTuvaluisatriskofsoo
olo
gerexisti
g；
otbecauseofwarorpoliticalcha
ge，butbecauseitwillbecoveredbytherisi
gocea
．
Tuvaluisexperie
ci
gtheharmfuleffectsofglobalwarmi
g．Asglobaltemperaturesrise，sotoodoestheocea
temperature．Duetothescie
tificlawof“thermalexpa
sio
，”r