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
44.What do Americans feel about using credit cards nowadays according to the passage?
A、They consider it valuable.
B、They regard it as a shame.
C、They think it dangerous.
D、They find it quite convenient.
17.The employees___more enthusiastic about their work since their pay rose.