11．　　One night many years ago, an angry voice woke me up from sleep. It was my drunken (喝醉的) father. Those days, he would always (1)       home very late. Sometime, he would also go on to fight with my mom.
　　My earliest memory of these events began when I was around four years old, I was filled with (2)       at that time. There were lots of (3)       — crying, shouting, and doors slamming (砰地关上).
　　Then, there was a (4)       knock at the door. My father opened the door. There were two tall men in blue. They wanted to come inside to (5)       everyone was okay. In a moment, my father was taken away. Everything became peaceful.
　　My father came back the next day. He became very friendly and (6)       brought my mom flowers. I knew that these men in blue had taken away my fear. From that day on, (7)       I wanted to be was a policeman. And my dream has come true.
　　I realized that police officers not only (8)       the little boy in me, but made me a helpful person. Once, my colleague (同事) and I jumped into a river and got a driver (9)       a sinking (下沉的) car. Another day, we kicked open the door into a house (10)       the fire spread through the whole building.
　　Police officers will always be my heroes, and I will always love my job.

12．　　Do you know how to take notes?Here are some useful tips.
★Don't write everything down. Pay more attention to the main points.
★You should write key words or very short sentences.
★You may use your own words, but try not to change the speaker's meaning.
★Don't worry about missing something during the speech.
★Don't take notes on paper that you might easily lose. Keep your notes in a notebook.
★Read your notes often. This will help you remember them later.

13．　　As we can learn from the story in our textbook, guide dogs are the "eyes" of blind people. But how can they be so helpful? The answer is simple. Guide dogs practice to be helpful. As part of the training, guide dogs practice getting to the places their owners will need to go. But before this, guide dogs must receive training in many other areas. This is because guiding a person safely is more important than just knowing where to go.
　　Suppose a tree branch (树枝) is lying on the road in front of a blind person and his guide dog. Since the person cannot see the branch, it's up to the dog to let him know it is there. If the branch is small the dog may help guide its owner around it. If it is large, the dog will stop the person. Then he knows there is something in the way. He will work with his dog to find a way past the branch.
　　Many people think a guide dog tells its owner when they can cross the road. This is not true. Instead, the dog usually stops its owner when they have reached the end of a road. Then the blind person listens to their situation and considers if it is safe to cross the road. A blind person and his dog always work as a team.

14．　　Robots may seem smart, but they cannot even pick up a chess piece. Let's take a look at some tasks that are easy for kids but not for robots.
　　Pick things up
　　Picking things up is not easy. If we drop our pencil on the floor, our brains work hard. First, we must find the pencil. Then we move our hands to it. A robot cannot always move its "hand" to the right place. When we touch the pencil, it might roll (滚动) a little bit. Robots cannot easily understand this either. So, if you drop a pencil on the floor, a robot will probably roll it around the room.
　　Get around in large space
　　If someone drops us in a building we've never been to, we might feel a bit lost. But we can look around, find a door and get out quickly. But a robot will look everywhere for a door, even on ceilings (天花板) and floors. This is because it's hard for them to understand spaces, especially large, blank things such as walls or ceilings.
　　Understand the world made by people
　　"Common sense" is what we don't need to think or talk about. Because of common sense, we do not look for doors on the ceiling. We pick up a coffee cup by its handle (把手). We feel whether it has coffee inside, and whether it's hot.
　　A robot? It may turn the cup upside down. It may hold the hot part of the cup. Scientists have tried teaching robots common-sense rules. But even huge databases (数据库) don't help much. Maybe they need more time to learn.

15．　　When I was walking back home at around 12:15 p. m. one day, an apple core (果核) came flying toward me. It landed just before my feet. Surprised, but I felt lucky not to get hit by it.
　　The apple was thrown over a wall by a school student. I live opposite a school. The wall separates my house from the school.
　　Thinking it was a one-off (一次的) experience, I told my friends, and we laughed about it.
　　Then, a week later, I was walking along exactly the same place at the same time and bam! Another apple core came over. This time it landed on the roof (屋顶) of a house. Oh, my God! I was nearly hit by it!
　　Last week I was on my way home. I checked my phone. It was 12:15 p. m. I thought about those two times when I had seen apple cores thrown over the wall. But suddenly, another apple core was thrown over with speed!
　　Enough was enough. Someone could be really hurt by these cores. Did the student(s) not realize that people live across the wall?Or did they not care?
　　I told my friend about it. "You should just throw the apple back over the wall. That will teach them," my friend suggested. But I don't want to play that "game'". As they say, an eye for an eye leaves the whole world blind.
　　Maybe I'll call the school and let them know. The students need to know that they might hurt someone if they keep throwing their waste. What's more, waste belongs in the bin, not anywhere else.

16．　　(1)      . After eating several dishes, I found myself so full that I couldn't eat anymore.
　　(2)      I suddenly felt lighter and enjoyed the tasty cake. But wait, why do I always have room for dessert?
　　(3)      What's your favorite food? And would you like to eat it every day? Imagine that you could eat your favorite food for two days in a row. Sounds good, doesn't it? Now, let's have the food for five days, and then ten days. You might get tired or this food.
　　(4)      Dessert is usually the last dish served. After you've eaten many different kinds of foods, you gradually begin to lose interest in them. At this point, a dessert comes in as a different kind of food. The novelty(新颖性) makes your brain want to try it out.
　　(5)      When you eat dessert, your brain gives out dopamine (多巴胺). This chemical will make you want more sweet things. So the dopamine "creates" new space for more dessert.
　　Of course, because desserts are so delicious, we must be careful not to overeat. Too much of anything can be bad for your health!

17．　　According to some old Chinese stories, there once was (1)       ancient emperor named Shennong. At that time, there was no medicine to treat illnesses. Many sick people could only wait for (2)       (die).
　　To save his people, Shennong decided (3)       (find) and test out different plants. He and his men set out on a journey in search of medicinal (药用的) plants.
　　Each time the team found a new plant, Shennong would taste it (4)      (he). Some plants made him feel (5)      /sli:pi/, some caused him to have a stomachache, and some made him tremble (颤抖) all over. (6)      Shennong searched and tested over a long time, he and his men discovered lots of medicinal plants.
　　As they continued their search, the team found a plant (7)       small yellow flowers. Shennong picked off one piece from the plant in order to taste it. He said, "It looks like a medicinal plant. I have to test it, or some people may misuse it."
　　Suddenly, Shennong's face turned pale and he fell on the ground (8)      (heavy). Even after he (9)      (give) the leaves from other medicinal plants, he still lost his life. People covered him with (10)      (thousand) of flowers. From then on, they called him "the Emperor of Medicine".

23．“双减”政策(double-reduction policy)实施后，你们学校开展了丰富多彩的课外活动。假设你是李华，请给你的美国笔友Tom写一封信，谈谈你参加课外活动的情况。内容包括：
(1)介绍你们学校开展的课外活动；
(2)叙述你的一次课外活动经历；
(3)说说你的体会。
要求:
(1)语言通顺，意思连贯，书写规范。文中不得出现真实的学校名称和人名；
(2)词数：80 词左右(书信开头已给出，不计入总词数)．
Dear Tom,
　　How's it going? Let me tell you something about our after-school activities. _______________________________________________________________________________________________________________________________________________________________________________________
Your friend,
Li Hua