听力原文：Making marks on a hook is absolutely necessary for efficient reading. By writing

听力原文： Making marks on a hook is absolutely necessary for efficient reading. By writing with hand, marking can keep the reader awake and concentrating on his reading, improving his active thinking and help him remember the thoughts of himself and those expressed by the author. It is true that sometimes people read novels or short stories mainly for pleasure and relaxation. But a great book full of rich ideas and beautiful language usually raises and tries to answer some serious basic questions. And such books demand the most careful reading. Putting notes on books not only draws the readers' attention but also gives him a good memory of language and thoughts.

Someone might think that writing and marking in the course of reading will take much more time and slow down reading, it probably will, but reading speed is not a measure of intelligence. Some books should be read quickly and with little effort, while some should be read slowly and with a great effort. The sign of intelligence, in reading is the ability to read different books differently ac- cording to their value. The important point is not to see how much one can finish, but rather how much one has learned and made to be the readers' own knowledge.

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A．Spoiling a book.

B．Measuring reading speed.

C．Decoration a book with lines, signs, etc.

D．Taking notes on a book while reading.