(Those of us) who work in chemical (laboratories) should have (their) lungs (checked) quite regularly.

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问题 (Those of us) who work in chemical (laboratories) should have (their) lungs (checked) quite regularly.

选项 A、Those of us
B、laboratories
C、their
D、checked

答案C

解析应改为our，代指前面的those of us。

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成人本科学位英语

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(Those of us) who work in chemical (laboratories) should have (their) lungs (checked) quite regularly.

成人本科学位英语

Thisclotheshas______greatlyafterseveralwashings.

Ifound,whilethinkingaboutthefar-reachingworldofthecreativeblackwoman,thatoftenthetruestanswertoaquestiontha

Iwouldrather______foraholidaythangiveupthisgoodopportunitytoattendtheconcert.

Withonlyabout1000pandasleftintheworld.Chinaisdesperatelytryingtoclonetheanimalandsavetheendangeredspecies.

Fiftyvolunteerswerealphabeticallydividedintotwoequalgroups,GroupAtoparticipateina7weeksexerciseprogram,andGr

What,besideschildren,connectsmothersaroundtheworldandacrosstheseasoftime?It’schickensoup,oneprominentAmerican

Theyhavedecidedonafinaldatebywhichtheyexpectthateveryone______thecouncil’sofferandhaveinstalledthatnecessary

Onedayin1848acarpenternamedMarshall,whoworkedinasawmillontheAmericanRiverinCalifornia,madearemarkabledisc

Norahardly(never)misses(an)opportunity(toplay)(in)thetennistournaments.

Toooftenyoungpeoplegetthemselvesemployedquitebyaccident,notknowingwhatliesinthewayofopportunityforpromotion,

依据被观察者所处的情境特点，可把观察分为()

支气管哮喘发作时，最有诊断意义的体征是

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根据刑事诉讼法律制度的规定，人民法院在审理过程中，发现犯罪已过追诉时效期限的。应当()。

企业的产品标准应在发布后_________日内办理备案。

按照教育法律规定，明知学校体育设施有危险，而不及时维护，结果造成学生人员伤亡的学校主管人员，依法追究其()。

HowCustomsWorkA)Oneofthelittleritualsallinternationaltravelersgothroughiscustoms.Tomostpeople,thisisjustano