Let’ssayapersongetsupat7:00inthemorningandgoestobedat11:00atnight.Hecomeshomefromworkabout6:30andbythetimehehasfinishedwithdinneritisafter8:00.Hestepsoutsideinthesummertorelax—butit’salreadygettingdark!Notmuchtimetoenjoythesummerday.

Nowsupposeyousettheclockaheadonehour.Thispersonstilldoeseverythingatthesametime—butthistimewhenhestepsoutat8:00there’sstillplentyoflighttoenjoy.Anhourofdaylighthasbeen“saved”forhim!

Daylightsavingtimedoesn’tofcourseaddanyhourstoaday.Thisisimpossible.Allitdoesistoincreasethenumberofusefulhoursofdaylightduringtheseasonswhenthesunrisesearly.

Daylightsavingismostpopularincities.Itallowstheclosingofofficesshopsandfactoriesattheendoftheworkingdaywhilethesunisstillhigh.Farmerswhodotheirworkbysuntimeusuallydonotobservedaylightsavingtime.Theycannotworkinthefieldbeforethemorningdew(露水)hasdriedorafteritappearsintheevening.

Didyouknowwhofirstthoughtofdaylightsavingtime?ItwasBenjaminFranklin!WhenhewaslivinginFranceinthe18thcenturyhesuggestedtheideatothepeopleinParis.Butitwasnotadoptedthen.

DaylightsavinglawswerefirstpassedduringWorldWarⅠwhenmaterialsformakingelectricitywashardtofindandwhenitwasnecessarytosaveonartificiallight.Withdaylightsavingthebedtimeofmanypeoplecomessoonafteritgetsdarkwhilewithoutitifpeoplestayupuntilthesamehourtheymayhavetouseartificiallight.

Germanywasthefirstcountrytoadoptdaylightsavingtimein1915.ThenEnglanduseditin1916andtheUnitedStatesadopteditin1918.

1.Whatdoestheunderlinedword“artificial”mean?

A.naturalB.man-made

C.brightD.sun

2.What’sthepurposeofadoptingdaylightsavingtime?

A.Tohavemoreartificiallight.

B.Tohaveonemorehourtowork.

C.Tomakebetteruseofdaylightincertainseasons.

D.Tohaveonemorehourtorest.

3.Whichofthefollowingistrueaccordingtothepassage?

A.Oncetheideaofdaylightsavingtimeisproposeditwasadopted.

B.Theideaofdaylightsavingtimewentthroughalongprocessofbeingadop