Itseemsasifthesun_____roundtheearthsinceitrisesintheeastandsetsinthewest.

A、circles
B、iscircling
C、hasbeencircling
D、werecircling
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正确答案:

D

答案解析:

“as if ”“ 似乎,好象”,太阳并不是绕着地球转, 所以后面应该与事实相反的假设, 要用虚拟语气。需要特别指明的是: “如果是一般的客观规律的陈述,则用一般现在时 ”。

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I‘vebeentellingyou_____nottodothat,butyounevelistenedtome.That’swhyyougotintotrouble.

A、attimes
B、timebeforetime
C、timeandagain
D、forthetimebeing

Hedidn‘tseemtomind_____themusicwhilehewasstudying.

A、themlistening
B、themtolistento
C、whenshereturned
D、thatdidshereturn

Williamhascuthissmoking_____tofivecigarettesaday.

A、down
B、short
C、away
D、off

Itwasnotuntilshehadfinishedallherwork_____.

A、didshereturn
B、thatshereturned
C、whenshereturned
D、thatdidshereturn

Theagriculturalrevolutioninthe19thcenturyinvolvedtwothings:theinventionoflabor-savingmachineryandthedeyelopmentofscientificagriculture.Labor-savingmachinerynaturallyappearedfirstwherelaborwasscarce.“InEurope,”saidThomasJefferson,“theobjectistomakethemostoftheirland,laborbeingabundant:hereitistomakethemostofourlabor,landbeingabundant.”ItwasinAmerica,therefore,thatthegreatadvancesin19thcenturyagriculturalmachineryfirstcame.

Attheopeningofthecentury,withtheexceptionofacrudeplowfarmerscouldhavecarriedpracicallyalloftheexistingagriculturalimplementsontheirbacks;by1860,mostofthemachineryinusetodayhadbeendesignedinanearlyform.Themostimportantoftheearlyinventionswastheironplow.Asearlyas1790CharlesNewboldofNewJerseyhadbeenworkingontheideaofacast-ironplowandspenthisentirefortuneinintrodueinghisinvention.Thefarmers,however,wouldhavenoneofit,claimingthattheironpoisonedthesoilandmadetheweedsgrow.Nevertheless,manypeopledevotedtheirattentiontotheplow,untilin1869JamesOliverofSouthBend,Indiana,turnedoutthefirstchilled-stillplow.?

1.Whatisthemaintopicofthepassage?

a.Theneedforagriculturaladvancestohelpfeedagrowingpopulation.

b.Thedevelopmentofsafermachinesdemandedbythelabormovement.

c.Machinerythatcontributedtotheagriculturalrevolution.

d.NewJerseyasaleaderintheagriculturalrevolution.

2.Theexpression“makethemostof”inLine4isclosestinmeaningtowhichofthefollowing?

a.getthebestyieldfrom

b.raisethepriceof

c.makefulluseof

d.earnalivingon

3.WhichofthefollowingcanbeinferredfromwhatThomasJeffersonsaid?

a.EuropewaschangingmorequicklythanAmerica.

b.EuropehadgreaterneedoffarmmachinerythanAmericadid.

c.Americawasfinallyrnningoutofgoodfarmland.

d.TherewasashortageofworkersonAmericanfarm.

4.Itcanbeinferredthatthewaord“here”inLine4refersto_____.a.Europe

b.America

c.NewJersey

d.Indiana

5.Whatpointistheautormakingbystatingthatfarmerscouldcarrynearlyalltheirtoolsontheirbacks?

a.Farmershadfewtoolsbeforetheagriculturalrevolution

b.Americansweretraditionallyself-reliant.

c.Lifeonthefarmwasextremelydifficult.

d.Newtoolsweredesignedtobeportable.

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