In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Let me give you an example: Article: There are a lot of public libraries in Britain. These libraries have more than one hundred and fifteen million books, not including those libraries of public schools. Public libraries not only lend books, music records but also help children, patients in hospitals and others to get special play readings, film shows and so on. The first public libraries were founded in about the year 1850. Today's public libraries usually have a reading-room, a lending room and a reference room. The greatest and most famous library in Britain is that of the British Library in London. It was founded in 1973 and has over 10, 000, 000 books. It has nearly every magazine, newspaper and book published in Britain and other parts across the world.
Answer: 10,000,000 or less.
The answer to this example can be: How many books are there in the British Library?
Here is why: In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

OK. solve this:
Article: While reading a book in English, every few lines of text, you run across a word or two that you don't know. You look up every new word in the dictionary. Bad move. All that does slow you down. Even electric or CD -ROM dictionaries can get in the way of your reading progress. A dictionary is like a road map. It can help you if you get lost and point you in the right direction. But if you stop to look at the "map" each time you take a step, you'll get nowhere fast. On your English learning "journey", a dictionary can be a helpful "travel companion "--if it is not overused. To help you start thinking in English, use an English-to-English dictionary. Otherwise, you will always depend on your native language and end up translating in your head. A good dictionary can help you do more than just find the meaning of a word. It can help you verify spelling, check word forms and grammar usage, find example sentence and learn pronunciation. Some dictionaries even provide exercises to teach you how to use their resources. Take time to get to know your dictionary. Learn the pronunciation symbols. Understand what the abbreviations mean. Try to master the important grammar rules. Look for charts, diagrams and lists might be useful in the future. You will discover how helpful it can be to make friends with your dictionary. And as they say, "A friend in need is a friend indeed."
Answer: Because it can help us to start thinking in English and in Chinese.
Answer:
Why do we need a good English-to-English dictionary?