如图表示某草原生态系统的食物网，请根据此图回答问题：

一名女中学生说：“上初中以后，我发现自己越来越看不懂自己了，我心事重重，渴望有人能了解我，但是却不想和别人倾述内心。总是不自觉地坐着发呆，有几次妈妈都被我的神情吓坏了。我不想和妈妈说话，经常有一种浓浓的孤独、迷茫和不安感。”

请结合材料，运用所学内容，回答下列问题：

阅读理解
    Tom lives in the UK. His friend Jack is in Dubai. He will go to see his friend. First he needs to go to London to take the plane.
    On Friday morning, Tom takes a bus to the train station. It takes Tom about 30 minutes to get there. Tom gets on the train at about 10 o'clock：The train leaves at 10：15. The train trip to London takes three hours. At lunchtime Tom gets to London. Tom eats a hamburger for lunch. Then he goes to the airport(机场)by subway. After about one hour,Tom gets to the airport. Tom gets on the plane at 8 o'clock in the evening. The trip takes a long time. Tom is tired(疲倦的)after a busy day. So he goes to sleep(睡觉). On Saturday morning, Tom gets to Dubai. He is very happy, because he will have a great time with his friend.

句型转换。

如图，晓宇在研究“牛顿第一定律”的实验过程中，小车从斜面顶端A处运动到木板C处停下来。请画出小车运动到B处时所受的各个力的示意图。