Unit One

Unit Two

Unit Three

Unit Four

Unit Five

Unit Six

Unit Seven

Unit Eight

Unit Nine

Unit Ten

Unit Eleven

Unit Twelve

Unit Thirteen

Unit Fourteen

Unit Fifteen

Unit Sixteen

Unit Seventeen

Unit Eighteen

Unit Nineteen

Unit Twenty

Unit Twenty-one

Unit Twenty-two

Unit Twenty-three

Unit Twenty-four

Unit Twenty-five

Unit Twenty-six

Unit Twenty-seven

Unit Twenty-eight

Unit Twenty-nine

Unit Thirty

Unit Thirty-one

Unit Thirty-two

Unit Thirty-three

Unit Thirty-four

Unit Thirty-five

Unit Thirty-six

Unit Thirty-seven

Unit Thirty-eight

Unit Thirty-nine

Unit Forty

Unit Forty-one

Unit Forty-two

Unit Forty-three

Unit Forty-four

Unit Forty-five

Unit Forty-six

Unit Forty-seven

Unit Forty-eight

Unit Forty-nine

Unit Fifty

Unit Fifty-one

Unit Fifty-two

Unit Fifty-three

Unit Fifty-four

Unit Fifty-five

Unit Fifty-six

Unit Fifty-seven

Unit Fifty-eight

Unit Fifty-nine

Unit Sixty

Unit Sixty-one

Unit Sixty-two

附录一 大学英语四级考试大纲

附录二 大学英语四级考试样题