北京地区成人本科学士学位英语统一考试（2011年5月）
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g50mi
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oughtocha
gebrai
cellactivityi
thepartofthebrai
closesttothea
te
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yharmis
otclearscie
tistsattheNatio
alI
stituteofHealthsaidataco
fere
celastmo
thaddi
gthatthestudywill
otlikelysettleco
cer
sofali
kbetwee
cellpho
esa
dbrai
ca
cer“Whatweshowedisglucose葡萄糖metabolism代谢asig
ofbrai
activityi
creasesi
thebrai
i
peoplewhowereexposedtoacellpho
ei
theareaclosesttothea
te
a”saidDrNoraVolkowoftheNIHwhosestudywaspublishedi
theJour
aloftheAmerica
MedicalAssociatio
76Thestudywasmea
ttoexami
ehowthebrai
reactstoelectromag
eticfieldscausedbywirelesspho
esig
als。Volkowsaidshewassurprisedthattheweakelectromag
eticradiatio
电磁辐射fromcellpho
escouldaffectbrai
activitybutshesaidthefi
di
gsdo
otsheda
ylighto
whethercellpho
escauseca
cer“Thisstudydoes
oti
a
ywayi
dicatethatWhatthestudydoesistoshowthehuma
brai
isse
sitivetoelectromag
eticradiatio
fromcellpho
eexposures。”Useofthedeviceshasi
creaseddramaticallysi
cetheywerei
troducedi
theearly1980swithabout5billio
cellpho
es
owi
useworldwide。Somestudieshaveli
kedcellpho
eexposuretoa
i
creasedriskofbrai
ca
cersbutalargestudybutheWorldHealthOrga
izatio
did
otofferacleara
swertothisVolkow’steamstudied47peoplewhohadtheirbrai
exami
edwhileacellpho
ewastur
edo
for50mi
utesa
da
otherwhilethepho
ewastur
edoffWhiletherewas
ocompletecha
gei
brai
metabolismtheyfou
da7perce
ti
creasei
brai
metabolismi
theregio
closesttothecellpho
ea
te
awhe
thepho
ewaso
。77Expertssaidtheresultswerei
teresti
gbuturgedthattheybeu
derstoodwithgreatcare“Althoughthebiologicalsig
ifica
ceifa
yofi
creasedglucosemetabolismfromtoomuchcellpho
eexposureisu
k
ow
theresultsrequirefurtheri
vestigatio
”He
ryLaioftheU
iversityofWashi
gto
i
theUSa
dDrLe
artHardellofU
iversityHospitali
Swede
wrotei
a
articlei
JAMA“Muchhastobedo
etofurtheri
vestigatea
du
dersta
dtheseeffects。”Theywrote。1Accordi
gtothepassagewhichofthefollowi
gisTRUE
1
fABCD
ow。2ABCD3AB4ABCD5passageABCD
Cellpho
euseisda
gerous。Cellpho
eur