单项选择题
A. the adopted has no close kin B. the adopted is a foreign child C. the adopter is wealthy enough D. the adopter has won some fame
A. kept in one home for three centuries B. once sold for about 2.5 million pounds C. put up for auction for the first time D. won by two American art dealers
A. business successes may cover the truth B. commercial activities may involve cooperation C. irrational ideas may influence technological progress D. misconceptions may be due to lack of information