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       When you step into a new environment, you must have a strong wish to fit in. Fitting in means making more friends，having more influence on others and getting more chances to live a happier life．Here is some advice that can help you．
Be confident．Confidence attracts most people．Everyone is special and there is only one person like you in this world．Spend some time thinking about your strong points．If so, you will be able to build up confidence step by step. You won't have much difficulty fitting in．
      Be kind to everyone. Kindness is the bridge to your own happiness. When people notice your kindness，they will return it one day．Always give more than you receive，and think more of others than of yourself．A person who cares for others is popular everywhere．
     Be active in group activities．Various activities like playing football can help you to be known to others．You may add more friends to your circle．At the same time，you'll be amazed to see how much they like you. Instead of being alone to waste time，going out to dance and singing together with others to develop friendship.
       Be optimistic．Optimism makes both you and others feel pleased．It makes a good first impression. A pleasant smile costs the least and does the most．Humor catches others' attention as well．People will like you for making them live happily．
     If you follow what is mentioned above，you will be accepted by people around you．As a result，you will fit in very well and enjoy your new life．

下列各组指定的元素不能形成AB₂型化合物的是(　　)

2016年10月，在中国第三个扶贫日、世界第二十四个消除贫困日到来之际，国务院新闻办公室发布《中国的减贫行动与人权进步》白皮书。白皮书说改革开放30多年来，7亿多贫困人口摆脱贫困，农村贫困人口减少到2015年的5575万人，贫困发生率降到5．7%。这说明（    ）