题目

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式，将答案填写在答题纸的相应位置。What can be both red or green, round or sharp, big or small, and more importantly loved or hated by someone? Yes, the answer is chilies (辣椒).Many of us in China enjoy adding chilies to our food, 【1】 did you know that this spicy (辣的) vegetable could also be dangerous? A 34­year­old man 【2】 (recent) ended up in hospital after eating a Carolina Reaper, the spiciest chili people 【3】 (know) so far. After taking just a single bit设全集U={1，2，3，4，5}，A∩B={2}，（CUA）∩B={4}，（CUA）∩（CUB）={1，5}，求集合A、B．