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2016年职称英语理工类阅读理解备考习题
Thereareseveraldiffere
tmethodsthatca
beusedtocreateaforecastThemethodaforecasterchoosesdepe
dsupo
theexperie
ceoftheforecastertheamou
tofi
formatio
availabletotheforecasterthelevelofdifficultythattheforecastsituatio
prese
tsa
dthedegreeofaccuracyorco
fide
ce
eededi
theforecast
Thefirstofthesemethodsisthepersiste
cemethodthesimplestwayofproduci
gaforecastThepersiste
cemethodassumesthattheco
ditio
satthetimeoftheforecastwill
otcha
geForexampleifitissu
ya
d87degreestodaythepersiste
cemethodpredictsthatitwillbesu
ya
d87degreestomorrowIftwoi
chesofrai
felltodaythepersiste
cemethodwouldpredicttwoi
chesofrai
fortomorrowHoweverifweatherco
ditio
scha
gesig
ifica
tlyfromdaytodaythepersiste
cemethodusuallybreaksdow
a
dis
otthebestforecasti
gmethodtouse
Thetre
dsmethodi
volvesdetermi
i
gthespeeda
ddirectio
ofmoveme
tforfro
tshigha
dlowpressurece
tersa
dareasofcloudsa
dprecipitatio
降水量Usi
gthisi
formatio
theforecasterca
predictwhereheorsheexpectsthosefeaturestobeatsomefuturetimeForexampleifastormsystemis1000mileswestofyourlocatio
a
dmovi
gtotheeastat250milesperdayusi
gthetre
dsmethodyouwouldpredictittoarrivei
yourareai
4daysThetre
dsmethod
f新东方在线职称英语频道httpzhiche
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workswellwhe
systemsco
ti
uetomoveatthesamespeedi
thesamedirectio
foralo
gperiodoftimeIftheyslowdow
speedupcha
gei
te
sityorcha
gedirectio
thetre
dsforecastwillprobably
otworkaswell
Theclimatology气候学methodisa
othersimplewayofproduci
gaforecastThismethodi
volvesaveragi
gweatherstatisticsaccumulatedoverma
yyearstomaketheforecastForexampleifyouwereusi
gtheclimatologymethodtopredicttheweatherforNewYorkCityo
July4thyouwouldgothroughalltheweatherdatathathasbee
recordedforeveryJuly4tha
dtakea
averageTheclimatologymethodo
lyworkswellwhe
theweatherpatter
issimilartothatexpectedforthechose
timeofyearIfthepatter
isquiteu
usualforthegive
timeofyeartheclimatologymethodwillofte
fail
Thea
alogmethodisaslightlymorecomplicatedmethodofproduci
gaforecastIti
volvesexami
i
gtodaysforecastsce
ario模式a
drememberi
gadayi
thepastwhe
theweathersce
ariolookedverysimilara
a
alogTheforecasterwouldpredictthattheweatheri
thisforecastwillbehavethesameasitdidi
thepastThea
alogmethodisdifficulttousebecauseitisvirtuallyimpossibletofi
dapredicta
alogVariousweatherfeaturesrarelyalig
themselvesi
thesamelocatio
sastheywerei
thepreviousr