It seems oil ______ from this pipe for some time. We’ll have to take the machine apart to put it right.

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问题 It seems oil ______ from this pipe for some time. We’ll have to take the machine apart to put it right.

选项 A、is leaking
B、had leaked
C、leaked
D、has been leaking

答案D

解析本句时间状语for some time表明这个动作已进行了一段时间，而句中的seems和will have to take说明leak这个动作还在进行，而且可能还会延续下去，故用现在完成进行时，因此D正确。

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专业英语四级

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It seems oil ______ from this pipe for some time. We’ll have to take the machine apart to put it right.

专业英语四级

Arecentsurveyshowsthatmostadolescentseat_______astheyactuallyneedeveryday.

_______Jameswantedtogocampingwithhisclassmatesattheweekend,hehadtostaybehindtohelphismomdothehousework.

U.S.EarlyChildhoodEducationFiftyyearsago,【T1】attendedearlyeducationprograms.Today,【T2】thechildrenof

TimeIfyoucan【T1】,youcanknowthetimeofday.Butnooneknows【T2】.【T3】__oursuccessinmeasuringthes

WhatBackpackingBeginnersShouldKnow?1.【T1】beforebackpackingBreakinnewhikingshoesWear【T2】toassureaprop

ChallengesofWorkingandLivinginaDevelopingCountry1.Findingdifferentcustoms,【T1】______andculturesDifferentwaysof

Weneedaplacewhereyoungfolkcanlettheirhairdownandenjoythemselves.Theunderlinedpartmeans______.

Unlessallthemembersagreeto_______totheplan,theremaybefurtherdevelopmentinthecourseofaction.

Thecouncilisrefusingto______furtherinformationaboutthedisputeanditssettlement.

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本例中的加工贸易合同，在进口前应向海关办理的备案手续是。加工贸易合同履行完毕后，经营单位应该持哪些单证到大连海关办理合同核销手续。

《合同法》规定，自债务人的行为发生之日起(　　　)年内，债权人没有依法行使撤销权的，该撤销权消灭。

当组织人力资源出现结构性失衡时，正确的供需平衡方法是()。

[2014年12月]已知M=(an+…+an—1)(a2+…+an)，N=(an+…+an)(a2+…+an—1)，则M＞N。(1)a1＞0；(2)a1an＞0。

[x]表示不超过x的最大整数，试确定常数a的值，使存在，并求出此极限．

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_______Jameswantedtogocampingwithhisclassmatesattheweekend,hehadtostaybehindtohelphismomdothehousework.

U.S.EarlyChildhoodEducationFiftyyearsago,【T1】______attendedearlyeducationprograms.Today,【T2】______thechildrenof

TimeIfyoucan【T1】______,youcanknowthetimeofday.Butnooneknows【T2】______.【T3】______oursuccessinmeasuringthes

WhatBackpackingBeginnersShouldKnow?1.【T1】______beforebackpackingBreakinnewhikingshoesWear【T2】______toassureaprop

ChallengesofWorkingandLivinginaDevelopingCountry1.Findingdifferentcustoms,【T1】______andculturesDifferentwaysof

Weneedaplacewhereyoungfolkcanlettheirhairdownandenjoythemselves.Theunderlinedpartmeans______.

Unlessallthemembersagreeto_______totheplan,theremaybefurtherdevelopmentinthecourseofaction.

Thecouncilisrefusingto______furtherinformationaboutthedisputeanditssettlement.

The_____familyinKoreancitiesnowspendsmoremoneyoneducationthanbefore.

Boilerroomsareoftendirtyandsteamy,butthisoneispristine(干净的)andcool.FoxPointisaspankingnew47-unit【C1】_______

______hisappearance,hecomesfromawell-offfamily.

冲脉交会任脉交会

下列哪项是修建性详细规划针对的地区()

会计科目是对会计对象的具体内容进行初始分类的标志，报表会计要素是对会计对象的具体内容进行终结分类的标志。()

本例中的加工贸易合同，在进口前应向海关办理的备案手续是______。加工贸易合同履行完毕后，经营单位应该持哪些单证到大连海关办理合同核销手续______。

《合同法》规定，自债务人的行为发生之日起( )年内，债权人没有依法行使撤销权的，该撤销权消灭。

当组织人力资源出现结构性失衡时，正确的供需平衡方法是()。

[2014年12月]已知M=(an+…+an—1)(a2+…+an)，N=(an+…+an)(a2+…+an—1)，则M＞N。(1)a1＞0；(2)a1an＞0。

[x]表示不超过x的最大整数，试确定常数a的值，使存在，并求出此极限．

U.S.EarlyChildhoodEducationFiftyyearsago,【T1】attendedearlyeducationprograms.Today,【T2】thechildrenof

TimeIfyoucan【T1】,youcanknowthetimeofday.Butnooneknows【T2】.【T3】__oursuccessinmeasuringthes

WhatBackpackingBeginnersShouldKnow?1.【T1】beforebackpackingBreakinnewhikingshoesWear【T2】toassureaprop

本例中的加工贸易合同，在进口前应向海关办理的备案手续是。加工贸易合同履行完毕后，经营单位应该持哪些单证到大连海关办理合同核销手续。

《合同法》规定，自债务人的行为发生之日起(　　　)年内，债权人没有依法行使撤销权的，该撤销权消灭。