题目选项分析

According to a recent study of consumer spending on prescription medications, increases in the sales of the 50 drugs that were advertised most heavily accounted for almost half of the .8 billion increase in drug spending last year, the remainder of the increase coming from sales of the 9,850 prescription medicines that companies did not advertise or advertised very little.

According to a recent study of consumer spending on prescription medications, increases in the sales of the 50 drugs that were advertised most heavily, accounting for almost half of the .8 billion increase in drug spending last year, while the remainder of the increase came from sales of the 9,850 prescription medicines that companies did not advertise or advertised very little.