If businessmen are taxed too much, they will no longer be motivated to work hard, with the result that incomes from taxation might actually ______.

【正确答案】 A

【答案解析】 解答该题的关键是根据从句主语的特点来确定答案。shrink“收缩，缩短”；delay“耽搁，延迟”；disperse“(使)分散，疏散”；sink“下沉”。形容经济、收入、规模缩小，一般用shrink。