第26题: [单项选择]Why did southerners want to keep slavery A. They could employ large numbers of slaves in cotton plantations. B. They could only produce cotton. C. The black people could go to the north to make money. D. They could unite the southern states. 参考答案:A
A. decisive B. extremely beneficial C. strong D. progressively greater 参考答案:D 答案解析:[参考译文] 第三行的"cumulative"这个词的意思很可能是"progressively greater"。 [试题分析] 本题考查考生根据文章上下文猜测词义的能力, [详细解答]