rldB．themostpowerfuleco
omiesi
wester
worldC．leadi
gcou
trieswithfastdevelopme
tofhuma
ityD．themoststablea
dsecurecou
triesi
theworld2．Fromthetextwek
owthati
dustrializatio
i
Africawill______．
fA．givefi
a
cialsupportstoallAfrica
cou
tries
Bcreatetradeopportu
itiesforbothAfricaa
dBRICS
Cmakesig
ifica
tdevelopme
ti
thepowerfulgroups
D．expa
dsustai
ableeco
omiccooperatio
i
differe
tco
ti
e
ts
3．Theauthorbelievesgreatercooperatio
amo
gBRICSwill______，
A．promoteglobaleco
omicgrowthB．bri
gmorechalle
ges
C．
arrowthegapofdevelopme
t
D．solveEurope’seco
omiccrisis
4．Whichofthefollowi
gisthedriveroftheeco
omicgrowthi
Africa？______．
A．Thedevelopme
tofbusi
essi
dustry
B．Protectiveexploratio
i
mi
eralproducts
C．Therecoveryofthei
frastructure
D．Thebe
efitsofhavi
g
ofi
a
cialcrisis
Passage5Whatmakesaperso
ascie
tist？Doeshehavewaysortoolsoflear
i
gthatarediffere
tfromthoseofothers？Thea
sweris“
o”．Itis
tthetoolsascie
tistusesbuthowheusesthesetoolswhichmakeshimascie
tist．Youwillprobablyagreethatk
owi
ghowtouseapowerisimporta
ttoacarpe
ter．Youwillprobablyagree，too，thatk
owi
ghowtoi
vestigate，howtodiscoveri
formatio
，isimporta
ttoeveryo
e．Thescie
tist，however，goeso
estepfurther；hemustbesurethathehasareaso
ablea
swer
tohisquestio
sa
dthathisa
swerhegetstoma
yquestio
sisi
toalargesetofideasabouthowthe
worldworks．
Thescie
tistsk
owledgemustbeexact．Theres
oroomforhalfrightorrightjusthalfthetime．He
mustbeas
earlyrightastheco
ditio
spermit．Whatworksu
dero
esetofco
ditio
sato
etimemust
worku
derthesameco
ditio
satothertimes．Iftheco
ditio
sarediffere
t，a
ycha
gesthescie
tist
observesi
ademo
stratio
mustbeexplai
edbythecha
gesi
theco
ditio
s．
Thisiso
ereaso
whyi
vestigatio
sareimporta
ti
scie
ce．AlbertEi
stei
，whodevelopedthe
TheoryofRelativity，arrivedatthistheorythroughmathematics．Theaccuracyofhismathematicswaslater
testedthroughi
vestigatio
．Ei
stei
sideaswereprovedtobecorrect．Ascie
tistusesma
ytoolsfor
measureme
ts．The
themeasureme
tsareusedtomakemathematicalcalculatio
sthatmaytesthis
i
vestigatio
s．
1．Whatmakesascie
tistaccordi
gtothepassage？
A．Thetoolsheuses．
B．Hiswaysoflear
i
g．
C．Thewayheuseshistools．D．Thevarioustoolsheuses．
f2．“…k
owi
ghowtoi
vestigate，howtodiscoveri
formatio
，isimporta
ttoeveryo
e．”Thewritersaysthistoshow_______．
A．theimporta
ceofi
formatio
B．thediffere
cebetwee
scie
tistsa
dordi
arypeopleC．theimporta
ceofthi
ki
gD．thediffere
cebetwee
carpe
tersa
dordi
arypeople3．Asou
dscie
tifictheoryshoulr