D. classification
Question 3. The tone of this passage can best be described as .
A. negative B. hysterical C. opinionated D. objective
Question 4. The main idea of this passage is that .
A. Question-and-answer sites have alternative to search engines.
B. Usenet newsgroups have been around for years.
C. The idea of question-and-answer sites is not new.
D. People have a lot of questions to be answered.
Question 5. The author’s purpose is writing this passage is to .
A. tell a story B. give information C. persuade D. entertain








