四、根据短文意思和首字母提示,写出一个完整正确的单词。
In China, when you want to travel on a h 1 train, you can now choose a

quiet car. The train company in China has started this on some train lines,
including the ones from Beijing to Shanghai, Beijing to Guangzhou, and
Chengdu to Chongqing.
You can choose a quiet car when you buy your train t 2 on the website www.12306.cn
which can offer train tickets. You can ask for a quiet seat in the s 3 class(等级). On the
12306 phone app, if a train has a quiet car, you will find a "q 4 " sign.
After you buy your ticket, you will receive a message telling you not to make any n 5 in
the quiet car. You should use earphones when listening to music and go outside the quiet car if
you t 6 on the phone. Parents must make sure their children behave well so that they won't
cause any trouble for o 7 . The conductors(列车员) will speak more s 8 . They also know
when each person will get off the train and tell him/her quietly.
If you would like to buy some food, you can scan(扫描) a s 9 code on the arm of your
seat. Follow the steps to order, and the salesperson will bring it to you.
Now, you can enjoy a nice and quiet train t 10 !
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.

五、阅读理解。(2025·江苏宿迁泗洪县期中)
Recently, the world has been very excited about AI models. DeepSeek R1 is one of them.
The company behind it, also called DeepSeek, is a business in Hangzhou, Zhejiang.
The new AI model first appeared on Jan. 20, 2025. In just one week, it beat OpenAI's
ChatGPT and became No. 1 free application(应用程序) in the App Store in China.
According to DeepSeek, the new AI model is as good at dealing with difficult activities as
other AI models. But it needs much less computing power(数据处理能力) to do that. It is also
one of the cheapest of its kind.
How does DeepSeek R1 learn? Instead of using the traditional ways, DeepSeek mainly uses
reinforcement learning(RL,强化学习). It helps the AI model learn by working out the right way
to do things on its own to get points. This makes DeepSeek R1 better at reasoning and solving
hard problems.
What's more, DeepSeek R1 is open source(开放源代码的). Everyone is free to get a copy of
its code(代码). They can also change the code to meet their own needs. "Being open source is
very important for sharing knowledge and making technology(技术) better for everyone," said
Liang Wenfeng, who set up DeepSeek.
()1. What does Paragraph 2 mainly say about DeepSeek R1?
A. It's new. B. It's free. C. It's special. D. It's popular.
()2. Why is being open source important?
A. Because it changes our needs. B. Because it helps share knowledge.
C. Because it makes AI cheaper. D. Because it uses new technology.
()3. What is the passage mainly about?
A. The differences between AI models. B. The problems faced by DeepSeek R1.
C. The introduction to DeepSeek R1. D. The importance of being open source.