Questions 21-25 are based on the following passage.

Reading skills are very important. Experts estimate that it is possible for any normal adult English speaker to read 1,000 words a minute and more, with special training. Yet most students read only about 300 words per minute. The following principles might be helpful for foreign students who wish to increase their reading skills:

     ◇   Always read faster than is comfortable. The faster your normal rate of reading becomes, the better your understanding will be.

     ◇   Keep reading ahead. Do not allow yourself to regress while reading, even when you come across a new word. If some word, term or phrase has clouded your understanding, you should reread it only after you have read the entire paragraph through once.

     ◇   Read selectively. As you read make a conscious effort to screen the nouns, pronouns, and verbs from the other words, since these are the words that give meaning to what you have read. In effect, you should really read the nouns, pronouns and verbs and merely see the rest of the words in the sentence.

  ◇   Read beyond the lines. As a good reader, you should see ideas implied through the words, and bridge the gap between the obvious and the suggested, thus obtaining much more information.

Because the reading assignments in most college courses are very long, students should plan to read every day. If, however, they find that they cannot complete all the assigned readings in the beginning, they should not panic. Instead, they should ask their classmates how much they are reading and attempt to learn from them what to read first and what to postpone until a later date.

Because much of the past learning experience of foreign students may have been for the purpose of passing examinations, they might be inclined to put off studying until late in the term. Such behavior can result in failure in the US system, where assignments must be completed on time and done regularly each day.

21. With special training, a normal adult English speaker may read _______ words per minute.

A. 300                                                          B. Less than 1000

C. 1000                                                        D. 1000 and more