练习材料：
Lesson 16 Apolite request
If youpark your car in the wrong place, a traffic policeman will soon find it. Youwill be very lucky if he lets you go without a ticket. However, this does notalways happen. Traffic police are sometimes very polite. During a holiday inSweden, I found this note on my car:' Sir, we welcome you to our city. This is a "No Parking" area. You will enjoyyour stay here if you pay attention to our street signs. This note is only a reminder.'If you receive a request like this, you cannot fail to obey it!
任务配置:L0+L4
练习感悟：今天的这个故事polite 和police这两个词，我在读的时候容易读混，还有就是这个小故事，虽然词都不难，但是一开始我没有读懂，因为他举自己在瑞典的例子的前说了句反话，但是他的语气我没有注意到，再加上最后一句故事的结尾，它使用了一个双重否定cannot fail，让我一开始有点懵，没有get到他真正的意思，然后结合着他这个问题，What was the polite request？我又一边读一边去思考这个问题，才真正理解这篇文章，才注意到文章中间的那句话在说polite的时候咬牙切齿的，很有意思。
