Directions:In each of the following groups of words,there are four underlined letters or let-ter combinations marked A,B,C and D.Compare the underlined parts and iden-tdtify the one that is different from the others in pronunciation.Mark your answerby blackening the corresponding letter on the Answer Sheet
A、actress
B、business
C、excess
D、endless
(30)__
A、effective
B、small
C、fatal
D、surprising
52.According to Paragraph 1,which of the following statements is TRUE of Mark Twain?