单项选择题
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
A. soft with their children B. unafraid to be critical C. as stubborn as mule D. respectful of nobody