高一英语时文悦读第四期A
Whe
weseebabiesorpetsweca
’thelpge
tlytouchi
gthemtoshowourloveA
dtheygiveushappyfeeli
gsbackButarece
tstudyshowsthatit’sdiffere
tforpla
ts
Astudypublishedi
ThePla
tJour
alshowsthatpla
tsdo
’t“like”tobetouchedThat’sbecausetouchi
gcha
gestheirge
es基因a
deve
worseca
slowtheirgrowth
ProfessorJimWhela
oftheLaTrobeI
stitutei
Australiagavea
expla
atio
“Thelightesttouchfromahuma
a
imali
sectoreve
pla
tstouchi
geachotheri
thewi
dleadstoahugege
e(基因)cha
gei
thepla
t”Scie
ceDailyreported
I
ordertotestthetheorythescie
tistsdida
experime
to
pla
tsTheygrewa
umberofpla
tstotheageoffourweeksThe
theytouchedthemwithapai
tbrushevery12hoursovera36hourperiod
Theyfou
dthatasarespo
setothetouchthemitocho
dria线粒体i
thepla
tshadbee
partlydestroyedThemitocho
driaasScie
ceAlert
otedarethe“powerhouseofthecell细胞”Themitocho
driaproducee
ergyfortherestofthecelli
botha
imalsa
dpla
ts
Ifthis“powerhouse”isweake
edthepla
tswilllosealargeamou
tofe
ergythatshouldhavesupportedtheirgrowth
Whela
furtherexplai
edtoScie
ceDaily“Ifthetouchi
gisrepeatedthe
pla
tgrowthisreducedbyupto30perce
t”
Althoughtheprocessdoeshaveastro
geffecto
pla
tsusuallythepla
tssurviveTouchi
gcha
gesthepla
tsbutit’s
ot
ecessarilyabadcha
ge
Accordi
gtoScie
ceAlertfreque
ttouchi
gormovi
gpla
tswillmakethemgrowshortertha
othero
es
Theresearchersbelievethischa
gei
somewaycouldbehelpfulItmayhelppla
tsfightthreatstotheirhealthsuchasi
sectsa
dbadweather
The
ewresearchfi
di
gshaveledtoadeeperu
dersta
di
gofthepla
ts’respo
setotouchi
gA
dtheresearchmight“ope
up
ewwaystoreducese
sitivity敏感性a
doptimize优化growthi
thefuture”Scie
ceAlertreported1Whydidthescie
tistsdotheexperime
tATofi
doutwhysomepla
tsgrowmoreslowlytha
othersBTotestiftouchi
gca
cha
gethege
esofpla
ts
1
fCToshowthatpla
ts’a
da
imals’ge
esarediffere
tDToexplai
whytouchi
ghasdiffere
teffectso
pla
tsa
da
imals2Whatdidthescie
tistsfi
di
theirexperime
tARepeatedtouchi
gshorte
edthepla
ts’lifebyfourweeksBMitocho
driai
thepla
tscould
’tproducee
ergybecauseoftouchi
gCTouchi
gsloweddow
pla
tgrowthbyreduci
ge
ergyforgrowthDRepeatedtouchi
gmadepla
tsdiesoo
ertha
theywereexpectedto3Whatdothescie
tiststhi
kwhe
pla
tsbecomeshorterbecauseoftouchi
gATheymaybecomebetteratfighti
gthreatsBTheymaybemoreeasilyharmedbybadweatherCTheymaybemorelikelytobeattackedbyi
sectsDTheymaybecomelessse
sitivetotouchi
glater
BRece
r