1.通过课文对人的感知觉的了解，扩大有关本话题的词汇。
2.牢固掌握有关易混词语的区别，在练习中加以应用。
3.在语篇练习中，巩固所学词汇的使用。
一、易混词语 对比练习(每小题1分，共38分)
act out; act as
1. Who will _________ chairman in his absence?
2. He tried to _______ a story that he had read.
3. Could you ________ a guide?
4. You must _________ what you said.
pay off; pay back; pay up; pay in; pay for
1. After two years he ________ all his debts.
2. Have you _________ yet?
3. How can I ______ you _______ for all your kindness?
4. My goods have vanished and the insurance company will have to _______ .
