I used to be very close to my father when I was a child. He gave me almost everything I wanted. Whenever I quarreled with my mother, I would turn to my father for comfort. He was everything to me.
Time flies like a bird. As I got older, I became silent and found it hard to start a conversation with my father. The gap(代沟) between us began to grow. He had done so much for me but I always took it for granted（理所当然）.
Last time our school gave us two days off, and daddy gave me a ride home on his motorbike. I was tired and fell asleep on his back. Later my mother said he was very happy because it had been a long time since we got close last. Suddenly I felt a little shamed. I realized that I had paid no attention to him a lot during the last few years.
The next day I stayed in bed and when daddy tried to wake me up to have breakfast, I pretended(假装) that I couldn’t hear him. At last he brought a bowl of noodles to my bed, and said, “Come on, dear, have your breakfast and then continue your dream.” I got so angry with him for troubling my sleep that I shouted, “__________.”
As I said this, I sat up quickly, and the bowl of noodles broke on the floor. Hearing the noise, mum came in and shouted at me, “What do you think your father is? Who else treats you as well as he does?”
I was shocked and didn’t know what to say. Finally I rushed with tears all over my face. I went to the pool where I used to go fishing with daddy. A few minutes later, I heard the sound of daddy’s motorbike. He was looking for me worriedly, but he didn’t notice me as I was sitting behind a tall brush.
I didn’t return home until 10 a.m.. The moment my parents saw me, they rushed to me. Mum hugged me tightly and daddy looked at me with worry in his eyes. “Are you hungry, dear?” he said at last. Before I could say anything, he had gone off on his motorbike to buy food for me.
【小题1】When the writer grew older, he found it         for him to have a talk with his father.

London used to be “foggy” for the same reason that cities like Beijing or Chongqing are “foggy” today. The “fog” was in fact smog, a mixture of smoke and fog. In other words, it was made by air pollution. In London, some of this pollution came from factories, but much of it came from the coal(煤)that people burnt in their houses to keep warm during the winter. By the 1950s, London’s smog problem had become so bad that the government decided to do something to clean the air. A new law was made and nobody could burn coal in any British city. Within a few years, the air became much cleaner. There were no more “pea-soupers”.
Many Chinese cities now face the same sort of problem with air pollution that London faced 40 or 50 years ago. However, this problem is more difficult for Chinese cities to solve. One reason is that more of the pollution comes from the factories, rather than from coal burnt in people’s houses. If these factories were closed, this would harm the economy and lots of people would lose their jobs. Another reason is that changing from coal to cleaner fuel(燃料), like gas, is quite expensive.
However, the air in many Chinese cities is becoming cleaner and cleaner, as the government and people pay more and more attention to cutting down pollution. As a result, there are fewer “pea-soupers” in Beijing than there used to be.
根据短文内容，选择最佳答案，并在答题卡上按要求作答。
【小题1】What was the main reason for air pollution in London?