2015年3月28日博鳌亚洲论坛举行开幕式，中华人民共和国主席***作主旨演讲．据此回答下题．

面对青春期同学们遭遇的生理和心理的变化，以下几种情况中处理正确的是（     ） 

阅读理解。根据短文内容，判断正误。

    I have a good family. There are four people in my family. They are my father, my mother, my sister and I. My father is 40. He is a Chinese teacher. My mother is 38. She is an English teacher. They work in different schools. My sister's name is Li Fang. She is ten. We are in the same school, but in different grades. We have a nice picture of our family. It's on the wall. Look! Our father and mother are on the chair, and we two stand behind them.

材料一：“重新疆者，所以保蒙古，保蒙古者，所以卫京师”──左宗棠

材料二：1880年7月，清政府派曾纪泽赴俄国彼得堡谈判，曾纪泽据理力争，再加上左宗棠的壮举，经过半年多交涉双方终于签约，中国收回伊犁。

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