Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following question Câu 1: A. goalie B. defensive C. prevent D. advanced Câu 2: A. disaster B. impartial C. initiate D. neutral Câu 3: A. epidemics B. catastrophe C. emergency D. activity Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part is pronounced differently from that of the rest in each of the following questions Câu 4: A. competitor B. medal .