单选题 Which of the following region is the second hardest hit region by AIDS in the world?

【正确答案】 A
【答案解析】“The report says the Caribbean is the hardest hit region in the world after Africa(报告显示，加勒比海地区是继非洲之后世界上最难被艾滋病袭击的地区)”故应选[A]。