Trắc nghiệm: Mark the letter A B C or D to indicate the word whose underlined part differs from the three in pronunciation in each of the following questions,Mark the letter A; B; C; or D to indicate the word whose underlined part differs from the three in pronunciation in each of the following questions,Mark the letter A. B. C. or D to indicate the word whose underlined part differs from the three in pronunciation in each of the following questions.,Mark the letter A. B. C. or D to indicate the word whose underlined part differs from the three in pronunciation in each of the following questions