D. Leech's works reflected social problems.

27. What is the text mainly about?

　　A. The biography of Dickens.

　　B. Leech's influence on Christmas.

　　C. Dickens' novel about Christmas.

　　D. The friendship between Leech and Dickens.

　　C

　Have you ever noticed what happens to an idea once you express it? Just talking about it or writing it down causes you to make it clear in your own mind. How can you use this to increase your brain power? Start writing.

　By putting thoughts into words, you are telling yourself the logic(逻辑) behind what you think, feel, or only partly understand. Often, explaining a thought is the process of understanding. In other words, you increase your brain power by exercising your "explaining power".

　Try this experiment. Explain how you'll increase your brain power, even if you have no idea how right now. Just start with anything, and create an explanation. For example, start with "I'll learn chess." or "I'll read an article on the mind every week." Explain how that will help. You'll be surprised to find it is a workable plan, and if you actually do this, you'll have a better understanding of your brain from now on.

　Another benefit of writing is that it helps you remember what you have learnt. Many, if not most, highly productive people are always taking notes. You can try keeping it all in your head, but if you keep a journal of your ideas the next time you're working on a big project, you'll probably have more success.

　Want to understand a topic? Write a book about it. That's an extreme example, but if you are learning something new, write a letter to a friend about it, and you will understand it better. Want to invent something? Write an explanation of the problem, why you want to solve it, and why it is worth solving, and you're halfway there.

　Writers don't always write because they clearly understand something beforehand. Often, they write about something because they want to understand it. You can do the same. Writing will help you to understand it. Give it a try.

28. What would be the best title for the text?

A Way on How to Write B. Increase Your Brain Power through Writing

　C. Brain Power Helps Improve Your Writing D. How to Start Your Writing

29. According to the text, writing can help you a lot in the following ways EXCEPT __________.

　A. the increase of your brain power B. the ability to remember

　C. the development of your interest in study D. the better understanding of a topic

30. If a writer writes something, it means that he or she ________.

　A. has understood it very well B. needs to understand it better

　C. wants to remember it in his or her mind D. is exercising his or her "explaining power"

31. What's the main purpose of the text?

　A. To advise readers to start their writing. B. To explain the importance of writing.

　C. To persuade readers to become writers. D. To increase readers' brain power.

　　D

Perhaps you want to know how to avoid losing your hearing due to noise. Or maybe you're already hard of hearing, and want to keep from losing even more hearing.