单项选择题
A. truth is hard to get due to misconceptions B. public health deserves much attention C. political elections have profound impact D. illusions are helpful in gaining new insights
A. many of the paintings were left on the shelf B. portraits were in greater demand than others C. buyers all found their favorite pieces D. sellers worried little about selling their lots
A. better at Western culture B. more proficient in English C. better at acquiring knowledge D. more bilingually competent