Directions:In each of the following groups of words, there are four underlined letters or ltter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet’
A、 action
B、 section
C、 solution
D、 question
What is the best title for the passage
A、Social Media and Its Function
B、Social Media and Its Abuses
C、Social Media and Its Future
D、Social Media and Its Risks
What is true about today' s communication through social media?