①社会意识具有相对独立性

②社会存在随着社会意识的变化发展而变化发展

③上层建筑对经济基础具有反作用

④认识、利用规律有利于提高人们活动的预见性

读图，回答下列问题．

如果你要完成一篇有关二战任务的作业，需要搜集史料，下列属于第一手资料的是（    ）

根据短文理解，从A、B、C三个选项中选择最佳答案填空。

    I was flying to New York at night. Suddenly, a storm broke and the plane began to be tossed（颠簸）around.

    When I looked 1 the plane, I could see that nearly all the passengers were worried and afraid. The future seemed terrible and many were 2 if they would make it through the storm.

    Then, I 3 saw a little girl. It seemed that the storm meant 4 to her. She sat on her seat reading a book. Sometimes she closed her eyes, then she would read again, with no 5 or fear in her eyes. When the other passengers were scared (惊恐的) half to death, that child was completely calm and 6 I couldn't believe my eyes.

    When the plane finally reached New York, I was not surprised to 7 that all the passengers were hurrying to come out. I stopped and spoke to the girl whom l had 8 for such a lone time.  I asked 9 she had not been afraid.

    The child replied, "My daddy is the 10, and he is taking me home."

依据图示回答：图A～C是分子的微观示意图，其中“ ”表示氢原子，“○”表示氧原子．

①表示化合物的是图____．

②可表示A转变为B的化学方程式是____，它属于基本反应类型中的____ 反应．