You will have 20 minutes to plan, write and revise an essay about the topic below. Your response will be judged on how well you develop a position, organize your ideas, present supporting details, and control the elements of standard written English. You should write 200-300 words.
charge customers for scientific, technical and medical content —> maintain its profit margin and help companies to continue to convey high-value content —> bring convenience and allow greater flexibility for consumers who are more willing to pay for good materials
不应该付钱：help companies to gain a larger customer base
If materials are made free of charge —> quick gain customers and develop a pool of loyal customers —> gain a competitive edge in the market, which helps companies to profit enormously eventually