一支向高空瞄准的步枪，扣动扳机后射出一颗子弹，子弹没有击中目标，最后下落陷在泥土中，以上过程中发生了哪些形式的能量转化呢？有四个同学分别给出了能量转化的顺序，你认为正确的是（　　）

阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中选出最佳选项。

    Look at the car. It is Mr Black's car. It doesn't work now. Mr Black is under it. He is repairing it. Mrs Black is near the car. She is helping Mr Black. A girl is in the car. She is Kate, Mr Black's daughter. Who is the boy in the car? He is Jim, Kate's brother. It is Saturday today. They don't work. They want to go to Zhongshan Park. They all look worried.

阅读下列材料，回答问题。

材料一：“蒋介石两个拳头这么一伸，他的胸膛就露出来了。所以，我们的战略就是要把这两个拳头紧紧握住，对准他的胸膛插上一刀。”

──***

材料二：

中国人民解放军与国民党军队主力决战的三大战役

材料三：解放战争开始时的国共两党力量对比

请回答：