新世纪理工科英语教程 化学和化工 教师用书PDF电子书下载

练习答案和参考译文 1

UNIT ONE 1

目录 7

教学要求 7

Teaching Suggestions 9

UNIT TWO 10

UNIT THREE 20

UNIT FOUR 31

UNIT FIVE 40

UNIT SIX 49

UNIT SEVEN 60

UNIT EIGHT 70

UNIT NINE 79

UNIT TEN 90

UNIT ELEVEN 103

UNIT TWELVE 113

UNIT THIRTEEN 121

UNIT FOURTEEN 130

UNIT FIFTEEN 140

UNIT SIXTEEN 148

UNIT SEVENTEEN 156

UNIT EIGHTEEN 167

UNIT NINETEEN 177

UNIT TWENTY 187