设集合A={1，2，3}，B={2，4}，则A∩B=____ 

安装在汽车上的后视镜，内部有电热丝加热，当镜面上起雾时启用电加热装置，镜面上的雾气就会消退，使司机看清周围的情况。雾气消退的过程属于（  ）

2015年国考报名截至21日17时，通过审核人数已近60万人，国家机关事务管理局中央国家机关政府采购中心采购三处副主任科员及以下一职依然一路领先，以1470．5：1的竞争比牢牢占据竞争最激烈职位之首。仍有507个职位处于零报名状态，铁路公安系统成为最冷门。这表明在市场经济条件下劳动者应该（    ）

下列计算，正确的是

    We spend hours, days and years of our lives in school. Imagine(想象) you could design(设计) your dream school, what would it be like? What would you be doing? We wanted to find out what teenagers around the world thought. Here is what they said:

    Richard from the USA: My dream school would have a big swimming pool and two soccer fields. It would also have a cinema, a gym and a shopping centre. My school has none of these, and I think there should be more pleasant things for students to do while they are studying.

    Sonia from Italy: I'd like a room where we can relax and play computer games. I'd also like to have a music room. I think there should be a place for everyone to go and relax after class.

    Wu from Beijing: I think it would be great to have another day off (休息日) every week, besides the weekend. If that day was a Friday or a Monday, we would have a long weekend every week. What fun! I also think school should start later, at about 10 o'clock, and finish earlier.

    Hannah from Australia: In my dream school, I think the teachers should give us more freedom(自由) and choice about how we study and what we study. I also think it's not necessary for us to wear school uniforms every day. I really don't like wearing it.