A the airport enlarges iis scale B there are too few passengers C the airport remains its current size D a new airport won't be constructed

A can be easily amused B might be excellent actors C are enthusiastic about plays D might pretend to be amused

A sense of humor is vital B humor can be insiructed C demand decides everything D humor derives from spontaneity

A scale and capacity of passengers B the proportion of foreign tourists C passengers'power of consumption D passengers'nature and destination

A unsmiling and hostile B humorous but impolite C smileless and humorless D polite but uncommunicative

A are insensitive to humor B have a good sense of humor C always embarrass foreigners D are not good at performance

A conrident B perplexed C concemed D indifferent

A caused great concern B gained public recognition C aroused slrong opposition D received enthusiaslic support

A Corporate Tax in America:Time to Reform B The QuesLionable Tax Breaks in America C Corporations in America:Time to Leave D The Hopeless Corporate Tax in America

A She gives free lectures to small companies in Germany. B Her interest on humor can date back to her college days. C She has dedicated herself to the study of psychotherapy. D She is a personal coach who trains medical practitioners.