中国有广阔的海域，拥有航空母舰保卫祖国海疆已不再是中国人遥远的梦想．建造航母需要大量的金属钛．钛因其硬度大、熔点高、常温下耐酸碱、耐腐蚀等优良的性能，被誉为“未来金属”．由钛铁矿提取金属钛的主要工艺过程如下：下列有关叙述错误的是（　　）

最美孝心少年”邓天芦，从3岁起就开始学习照顾生活不能自理的妈妈。多年来，他一直坚持为妈妈洗衣做饭，同时还管理自家农田和菜地。这说明孝敬父母                （）
①只要求在生活上照顾父母  ②要积极承担家庭的责任  ③要落实到行动上，从小事做起   ④只是公民的道德义务 

    When you step into a new environment,you might have some difficulty in fitting in.Here are some tips____ might help you.

    Be confident.You are unique in this world.Spend some time thinking about your____(strong) and you will be able to build up confidence step by step.

Be kind to everyone.Kindness is the bridge to your own happiness.Always give more than you receive,and think more of others than of ____(you).A person who cares for others is popular everywhere.

    Be active in group activities.____ (vary) activities like playing football can help you to be known____others. You may add more friends to your circle.At the same time,you'll be amazed____(see) how much they like you.

    Be optimistic.Optimism____(make) both you and others feel pleased.It helps you make____good first impression.A pleasant smile costs the____(little) but does the most.If you follow the suggestions____(mention) above,you will be accepted by people around you.And you will fit in very well and enjoy your new life.

①干冰 ②冰水混合物   ③医用75%的酒精   ④氢气  ⑤纯净的液态空气  ⑥矿泉水⑦过氧化氢溶液⑧木炭⑨二氧化锰⑩用高锰酸钾制取氧气后的生成物六种物质，其中属于混合物的有（填序号，下同）____，属于纯净物的有____．属于氧化物的有____属于化合物的有____．