人人说英语 Unit 2 Transport

本文介绍了北京的公共交通系统,包括公共汽车、出租车、地铁等,并通过对话形式展示了如何使用这些交通工具。此外,文章还特别提到了自行车作为北京典型出行方式的独特魅力。

Transport

Listen to the recording.Read aloud and learn by heart the following 10 sentences.
1.I'm afraid you've got on the wrong bus.
2.You'll have to get off and change to 320.
3.We should make it if the lights are with us.
4.Step in and bang the door,please.
5.Here we are just in time.
6.Wwlcome aboard Air China.
7.May I see your boarding pass,please?
8.The flight will take about 2 hours..
9.You'll have to the Subway line 1.
10. Let me show you the nearest subway station.

Listen to the recording and read the passage below. Pay special attention to the bold words and expressions.

To welcome the coming Olympic games and people from all over the world,Beijing has been modernizing its public transportation.Public buses are the cheapest one. The most convenient way to get around the city however is by taxi.But perhaps the fastest way to tour the central area of the city is by subway.Aside from these means of transportation, bicycle is the most typical of Beijing.To some foreign visitors, circling through many BeiJing's narrow HuTong is a fascinating experience to get to know the city.

Listen to the dialog and then read after recording.

Foreign visitor: Excuse me. Does this bus go to the West Railway Station? 
Bus Conductor: No,madam. I'm afraid you've got on the wrong bus. 
F: Oh,dear! What shall I do then?
B: You have to get off and change to 320.
F: Can you tell me where to get off? 
B: At the Renmin University. That's the next stop. 
F: Is there a 320 bus stop near the university? 
B: We share the bus stop with 320. You just wait at where you alight. 
F: Thank you. Ah, I see a 320 pulling over ahead. 

Listen to the dialog and then read after recording.

F: Hello, can you take us to the friendship hotel?
T: Sure, step in and bang the door plz
F: Do you think we can get to the hotel before eleven?
T: We should make it if the lights are with us
F: This is not rush hour, the traffic's not very heavy.
T: We are luck. Here we are. Just in time. 27yuan plz.
F: Thanks a lot. Let's call it 30yuan

Listen to the dialog and then read after recording.

A: Good morning. Welcome aboard. this way plz.
F: It's nice to be on your plane.
A: May I see your boarding pass plz?
F: Sure, here you are.
A: Plz go straight to the back,sir.You'll find your site there.
F: Thank you. How long does this flight take, by the way?
A: Oh. Only about fifty minutes.
F: Dear Sirs and madams,We are going to take off soon. Please fasten your seat belt.Have a nice trip.

Listen to the dialog and then read after recording.

P: Excuse me.What subway station am I in? I got lost.
A: This is a subway interchange station.
P: Which way do i go for TianAnMen Square?
A: You'll have to change to Line 1.
P: Do you mean that east-west straight line on the map?
A: Yes, You just traveled through the loop line
P: Now I see. Thank you.
A: Sir. You are going through a wrong exit.
P: Am I? Where does this exis lead to?
A: It leads to Chang'an Boulevard.

Speak to yourself. Listen to the recording and read the passage below.Pay special attention to the bold word and expression

Taxi drivers in BeiJing are always very friendly to their passagers.Some of them are good tourist guides too.They talk to you when driving,showing you the government building, museums and temples.and other places of historical interest along the way.Sometimes they talk to you Peking Opera, temple fair and other cultural activities typical of city.Talking to them, you may feel  not only the closeness of city, but also the warmth of humanity.Now, to welcome the visitors from all over the world, many of the city's taxi drivers are begining to learn english.Just imagine,if they could speak good english, how enjoyable it could be for foreign visitors to take their taxi.

(Kriging_NSGA2)克里金模型结合多目标遗传算法求最优因变量及对应的最佳自变量组合研究(Matlab代码实现)内容概要:本文介绍了克里金模型(Kriging)与多目标遗传算法NSGA-II相结合的方法,用于求解最优因变量及其对应的最佳自变量组合,并提供了完整的Matlab代码实现。该方法首先利用克里金模型构建高精度的代理模型,逼近复杂的非线性系统响应,减少计算成本;随后结合NSGA-II算法进行多目标优化,搜索帕累托前沿解集,从而获得多个最优折衷方案。文中详细阐述了代理模型构建、算法集成流程及参数设置,适用于工程设计、参数反演等复杂优化问题。此外,文档还展示了该方法在SCI一区论文中的复现应用,体现了其科学性与实用性。; 适合人群:具备一定Matlab编程基础,熟悉优化算法和数值建模的研究生、科研人员及工程技术人员,尤其适合从事仿真优化、实验设计、代理模型研究的相关领域工作者。; 使用场景及目标:①解决高计算成本的多目标优化问题,通过代理模型降低仿真次数;②在无法解析求导或函数高度非线性的情况下寻找最优变量组合;③复现SCI高水平论文中的优化方法,提升科研可信度与效率;④应用于工程设计、能源系统调度、智能制造等需参数优化的实际场景。; 阅读建议:建议读者结合提供的Matlab代码逐段理解算法实现过程,重点关注克里金模型的构建步骤与NSGA-II的集成方式,建议自行调整测试函数或实际案例验证算法性能,并配合YALMIP等工具包扩展优化求解能力。
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