38（）

单项选择题All caregivers believe that they can （）.

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

单项选择题If we take two unrelated people at random from the population (Para. 2) means if we （）.

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