lei
theworlddo
thavea
yelectricity．A
dbesidesthat，therearealotofhealthproblemsbecausewhatpeopleusei
steadoftheelectricityareharmfulchoiceslikekerose
e（煤油）lamps，whichproducealotofsmoke．JuliaSilverma
saysthesoccketballiso
esmallsolutio
（解决方法）toabigproblem．JessicaMatthewsa
dJuliaSilverma
hopetheirsoccketballwillshi
emorelighto
theproblemofpowershortages．Itofferspeopleacha
cetoputtheire
ergyi
totheworldsmostpopularsporta
dgetsomee
ergyi
retur
．
41．Fromthepassage，wek
owthesoccketisA．a
activechildB．a
i
ve
tio
C．alampD．amobilepho
e
．
f42．Ifyouplaythesoccketforhalfa
hour，itca
providea
LEDlampwithelectricityfor．
A．fiftee
mi
utesB．halfa
hourC．sixhoursD．threehours43．Theu
derli
edword