6. What is the new writer suggesting in the second paragraph? sa. Mouse can produce the cancer cell its brain. b. Mouse is an example of one aging cell can damage nearby cells. c. Free radical and other molecules can develop cancer cells. d. free radical is bad for the brain cell in mouse's brain e. DNA can be damaged by other cells 7. What is the main idea of the third paragraph a. Rotten apple can be very bad fruit for skin cell. b. People call the aging skin cell "rotten apple c. skin cell are involved in repairing wounds and be able to maintain their ability to divide d. Skin cell can be used as "rotten apple" to help the neurons. e. Aging skin cell can damage the nearby cells. 8. What could be the suitable title for this passage.? a. Rotten Apple is Bad for Cell b. Brain Cell Can Be Damaged Easily d. The Differences Between Cells c. One Aging Cell Effect the Whole d. Skin Cell Better Than Brain Cell 9. According to passage, it can be inferred that a. we should not eat rotten apple b. the researchers already know why cell is aging c. brain cell is very important for everybody d. we should not let the brain cell aging e. the researchers might find the way to cure brain disorder soon 10. Which of the following statements is true?