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
18.Children don't understand initially what they are reciting, but___it will have an impact on their thinking.
A、casually
B、especially
C、regularly
D、gradually
7. -The boss wants to talk to you.He seems unhappy with your performance. -Oh,I ___be in trouble.I hope he won't fire me.