A、To make corrections in spelling and grammar. B、To make the main idea clear to the reader. C、To add more specific details and e

By the end of the term I hope you’ll be convinced that formal writing always requires revision. Sometimes it requires a fairly major rewriting of the paper. Some students may have the mistaken idea that revision means simply making corrections in spelling and grammar. I call that proof-reading. What I expect you to do as you revise is to value and improve the overall effectiveness of your paper. But how can you tell if your paper is effective? Well, for example, start by asking yourself these questions: Is the topic restricted enough to be fully discussed within the given links? Are the main ideas clear? Are they supported by the specific details in the examples? Do they move smoothly from one idea to the next? You’ll need enough time for a possible major repair, that is, you may have to make a lot of changes before your paper becomes really clear to the reader. So I’ll expect a draft of each paper two weeks before the final due date. That way I can criticize it and get it back in time for you to revise it. Then you can turn in a final draft for grading. This process may seem like a great deal of trouble at first but I think you will find it valuable. In fact after you finish this course I doubt that you will ever turn in a term paper without first revising it carefully.
Questions 13 to 15 are based on the passage you have just heard.
13. What should the students’ aim be when they revise their work?
14. When should the first draft be turned in?
15. What is the purpose of the talk?