材料一：近年来，中国乘客在飞机上“打架”的新闻频繁见诸报端。2012年9月，两名中国乘客因调整座椅引发冲突致瑞士航班返航。2013年12月11日晚，在一架曼谷飞南京的航班上，两名中国乘客闹事导致飞机返航。今年4月，在泰国飞北京航班上，3名中国乘客因嫌对方吃饭声大，持用餐的刀叉互殴。连***主席出访时也忍不住向中国游客喊话了：“我插一句啊，也要教育我们的公民到海外旅游讲文明。矿泉水瓶子不要乱扔，不要去破坏人家的珊瑚礁。少吃方便面，多吃当地海鲜。”汪洋副总理提到，我国旅游消费已进入大众化发展阶段，越来越多居民出国旅游，部分游客素质和修养不高，公共场合大声喧哗、旅游景区乱刻字、过马路时闯红灯、随地吐痰等不文明行为，常常遭到非议，“有损国人形象，影响比较恶劣”。

材料二：文明礼仪是中华文明的重要内容。但是微博、微信上并不是一个温馨家园，造谣生事的，人身攻击的，污言秽语的，这些不文明的行为，伤害了我们，也在误导着我们。为了营造一个清新、文明的网络环境，让我们更好的相互学习与交流，传递正能量，我们就需要规范网络用语，拒绝网络脏话。

    In the United States, children start school when they are five years old. In some states they must stay in school1they are sixteen. Most students are seventeen or eighteen years old when they2secondary(中等的)schools. There are two kinds of schools in the United States: public(公立的)schools and private(私立的)schools.3children go to public schools. Their parents do not have to4their education because the schools5money from the government(政府).If a child goes to a private school, his parents have to get enough money for his schooling. Some parents still6private schools, though they are much more expensive.

    Today about half of the high school students7universities(大学)after they finish the secondary school. A student at a state university does not have to pay very much if his parents8in that state.

    But many students9while they are studying at universities. In this way they10good working habits(习惯)and live by their own hands.

（2015•绵阳）预防传染病传播的宣传图画中，下列哪一项不是艾滋病的传播途径（ ）