十道英语选择题,四级左右难度.

21.________thatthedemandforpowercontinuestoriseatthecurrentrate,itwillnotbelongbeforetraditionalsourcesbecomeinadequate.

A)Concerning

B)Regarding

C)Ascertaining

D)Assuming

22.Wefindthatsomebirds_____twiceayearbetweenhotandcoldcountries.

A)migrate

B)emigrate

C)transfer

D)commute

23.Asvisitingscholars,they_______willinglytothecustomsofthecountrytheylivein.

A)submit

B)commit

C)conform

D)subject

24.Theprofessorfoundhimselfconstantly_______thequestion:“Howcouldanyonedothesethings?"

A)poring

B)pondering

C)presiding

D)presuming

25.Inthosedays,executivesexpectedtospendmostoftheirlivesinthesamefirmand,unlesstheyweredismissedfor_______,toretireattheageof65.

A)denial

B)deduction

C)integrity

D)incompetence

26.Herjewelry_______underthespotlightsandshebecamethedominantfigureattheball.

A)blazed

B)dazzled

C)glared

D)glittered

27.Weeks______beforeanyonewasarrestedinconnectionwiththebankrobbery.

A)elapsed

B)expired

C)overlapped

D)terminated

28.Oftensuchargumentshavetheeffectof______ratherthanclarifyingtheissuesinvolved.

A)blocking

B)obscuring

C)tackling

D)prejudicing

29.Heraisedhiseyebrowsandstuckhisbeadforwardand_______itinasinglenod,agestureboysusedthenforO.K.whentheywerepleased.

A)jerked

B)twisted

C)shrugged

D)tugged

30.Shehadrecentlyleftajobandhadhelpedherselftocopiesofthecompany'sclientdata,whichsheintendedto______instartingherownbusiness.

A)dwellon

B)baseon

C)drawupon

D)comeupon