单项选择题
A.public speakers. B.grammar teachers. C.masters of ceremonies. D.evaluators.
A.work in the same sort of job as her husband. B.play down her success,making it sound unimportant. C.stress how much the family gains from her high salary. D.introduce more labour-saving machinery into the home.
A.a loss of knowledge and experience to many companies. B.a decrease in the number of 35- to 44-year-olds. C.a continuous increase in the number of 50- to 64-year-olds. D.its impact on the developed world whose workforce is ageing.