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 answer by blackening the corresponding letter on the Answer Sheet.
A、pension
B、mission
C、tension
D、revision
(26)__
A、long
B、short
C、happy
D、sad
10.The train___to arrive at 11:30,but it was an hour late.no