GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - 7V4C25GKRF4BQN5QJ

The author of the passage uses the highlighted quotation primarily to A. indicate how blues poetry should be performed B. highlight the difficulties faced by writers of blues poetry C. support the idea that blues poetry is a genre doomed to fail D. illustrate the obstacles that blues poetry is unable to overcome E. suggest that written forms of blues are less authentic than sung blues