单选题____AactingBrelyingCcenteringDcommenting
单选题
____
A
acting
B
relying
C
centering
D
commenting
参考解析
解析：
act on对……起作用；按……行动。rely on (up on)依靠、依赖。center on集中；围绕。comment on对……进行评论。本题应该选择C项，centering on在句中作定语修饰“theories”。故C项为正确答案。
act on对……起作用；按……行动。rely on (up on)依靠、依赖。center on集中；围绕。comment on对……进行评论。本题应该选择C项，centering on在句中作定语修饰“theories”。故C项为正确答案。
相关考题：
单选题— Take this medicine twice a day, Peter? —Do I have to take it? It（）so terrible.Ais tastingBis tastedCtastesDhas tasted
单选题The law prohibits occupancy by more than 250 persons in this area.AforbidsBallowsCpromisesDsuggests
单选题In this passage, the author tells us _____.Ahow to make the workers more productiveBimpossible factors leading to greater efficiencyCto what extent more money leads to greater productivityDhow to make workers’ jobs more interesting
单选题The author thinks that drugs used for treating psychological illnesses _____.Acould be ineffective in some casesBusually have harmful side effectsCcan greatly alleviate the illnessesDcan remove the root causes
单选题He is fond of playing（）piano while his brother is interested in listening to（）music.A/；theB/；/Cthe；/Dthe；the
单选题For many years, Mark, a film star in Hollywood, has been suffering from the _____ that he is a great man.AallusionBillusionCelusionDdelusion
单选题He is a popular movie star. His popularity（）in the high attendance at all his movies.AreflectsBreflectedCis reflectedDis reflecting
单选题Would you mind changing seats with me?（）AYes, you can.BOf course, I like to.CNo, I don't mindDCertainly, please do.
单选题The author believes that the solution of family problems _____.Ais best felt in the hands of social workers and specialists on the familyBis similar in all familiesCneeds to be reached by-ways unique to each familyDis not necessary in household where sharing is done
单选题Shall we sit up here on the grass or down there near the water? （）AI'd rather stay here if you don't mind.BSorry, I don't like neither.CCertainly, why not?DYes, we like these two places.
单选题What benefit will distance learning bring to an employee of a business?AProfessional growth.BGood relationship with the employer.CGood impression on the employer.DHigher salary.
单选题According to the report, air pollution in big cities _____.Acan be more serious than Chernobyl nuclear disasterBcannot be compared with the disaster in ChernobylCcan release as damaging radiation as the Chernobyl disasterDcan be more serious than we used to think
单选题I went to the beach and got plenty of rest.（） You looked tired last time I saw you.AI hope soBReallyCI'm glad you didDThe sound was nice
单选题The highest and best form of efficiency is the spontaneous cooperation of a free people.AinternalBcompulsoryCcompetentDnatural
单选题He likes to（）stamps as his hobby.AcollectBraiseCgatherDpick