单项选择题
A. broken out B. exploded C. recorded D. brought about
A. care for their elderly parents better than any other people B. keeps closer to their old parents by this means C. does much better if they have a job as social workers D. improve the care of the elderly with the help of the social workers
A. choose two persons with different intelligence B. choose two persons who are relative C. take out two persons of close relationship D. pick any two persons