Book Ⅰ 1
Lesson One 1
Additional Notes 1
Contents 1
Key to Exercises 3
Chinese Translation(for Referencc) 3
Lesson Two 4
Additional Notes 4
Key to Exercises 5
Chinese Translation(for Reference) 5
Lesson Three 6
Key to Exercises 6
Chinese Translation(for Reference) 7
Key to Exercises 8
Lesson Four 8
Additional Notes 8
Chinese Translation(for Reference) 9
Lesson Five 10
Additional Notes 10
Key to Exercises 11
Chinese Translation(for Reference) 11
Lesson Six 12
Key to Exercises 12
Chinese Translation(for Reference) 12
Lesson Seven 13
Additional Notes 13
Word Study 15
Grammar Notes 16
Listening Material 18
Key to Exercises 18
Chinese Translation(for Reference) 20
Lesson Eight 21
Additional Notes 21
Word Study 22
Grammar Notes 23
Listening Material 26
Key to Exercises 26
Chinese Translation(for Reference) 28
Lesson Nine 29
Additional Notes 29
Word Study 30
Grammar Notes 32
Listening Material 35
Key to Exercises 36
Chinese Translation(for Reference) 38
Lesson Ten 39
Additional Notes 39
Word Study 40
Grammar Notes 42
Listening Material 43
Key to Exercises 44
Chinese Translation(for Reference) 46
Lesson Eleven 47
Additional Notes 47
Word Study 50
Grammar Notes 51
Listening Material 52
Key to Exercises 53
Chinese Translation(for Reference) 55
Lesson Twelve 56
Additional Notes 56
Word Study 58
Listening Material 59
Key to Exercises 60
Chinese Translation(for Reference) 63
Lesson Thirteen 64
Additional Notes 64
Word Study 65
Grammar Notes 67
Key to Exercises 70
Listening Material 70
Chinese Translation (for Reference) 72
Lesson Fourteen 74
Additional Notes 74
Word Study 77
Grammar Notes 78
Listening Material 80
Key to Exercises 81
Chinese Translation(for Reference) 83
Lesson Fifteen 85
Additional Notes 85
Word Study 87
Grammar Notes 88
Listening Material 91
Key to Exercises 92
Chinese Translation(for Reference) 94
Lesson Sixteen 96
Additional Notes 96
Word Study 97
Grammar Notes 99
Listening Material 101
Key to Exercises 102
Chinese Translation(for Reference) 104
Lesson Seventeen 106
Additional Notes 106
Word Study 111
Grammar Notes 112
Key to Exercises 116
Listening Material 116
Chinese Translation(for Reference) 119
Lesson Eighteen 121
Additional Notes 121
Word Study 123
Listening Material 125
Key to Exercises 126
Chinese Translation(for Reference) 131
Supplementary Readings 133
Chinese Translation(for Reference) 133
1．The Stamp Club 133
2．The Development of Railway Transportation 133
3．Hibernation 134
4．Some Concepts in Biology 135
6．In the Science Laboratory 136
5．A Letter to Mr Faria s 136
Book Ⅱ 139
Lesson One 139
Additional Notes 139
Word Study 141
Grammar Notes 143
Listening Material 146
Key to Exercises 147
Chinese Translation(for Reference) 150
Lesson Two 152
Additional Notes 152
Word Study 155
Grammar Notes 157
Listening Material 158
Key to Exercises 159
Chinese Translation(for Reference) 163
Lessou Three 165
Additional Notes 165
Word Study 166
Grammar Notes 168
Listening Material 172
Key to Exercises 173
Chinese Translation(for Reference) 177
Lesson Four 179
Additional Notes 179
Word Study 180
Grammar Notes 183
Listening Material 186
Key to Exercises 187
Chinese Translation(for Reference) 191
Lesson Five 193
Additional Notes 193
Word Study 195
Grammar Notes 197
Listening Material 200
Key to Exercises 201
Chinese Translation(for Reference) 204
Lesson Six 206
Additional Notes 206
Word Study 207
Grammar Notes 209
Listening Material 210
Key to Exercises 211
Chinese Translation(for Reference) 215
Lesson Seven 217
Additional Notes 217
Word Study 218
Listening Material 220
Key to Fxercises 221
Chinese Translation(for Reference) 226
Lesson Eight 228
Additional Notes 228
Word Study 229
Grammar Notes 231
Listening Material 234
Key to Exercises 235
Chinese Translation(for Reference) 240
Additional Notes 242
Lesson Nine 242
Word Study 244
Grammar Notes 247
Listening Material 249
Key to Exercises 250
Chinese Translation(for Reference) 254
Lesson Ten 257
Additional Notes 257
Word Study 259
Grammar Notes 261
Listening Material 263
Key to Exercises 264
Chinese Translation(for Reference) 269
Additional Notes 272
Lesson Eleven 272
Word Study 274
Grammar Notes 277
Listening Material 279
Key to Exercises 280
Chinese Translation(for Reference) 283
Lesson Twelve 286
Additional Notes 286
Word Study 287
Grammar Notes 289
Listening Material 291
Key to Exercises 292
Chinese Translation(for Reference) 296
Additional Notes 299
Lesson Thirteen 299
Word Study 301
Grammar Notes 304
Listening Material 305
Key to Exercises 307
Chinese Translation(for Reference) 311
Lesson Fourteen 314
Additional Notes 314
Word Study 316
Listening Material 318
Key to Exercises 320
Chinese Translation(for Reference) 325
Chinese Translation(for Reference) 329
1．The Use of Mathematics 329
Supplementary Readings 329
2．The Deepest Parts of the Oceans 330
3．Locating Positions on the Earth 331
4．The Universe 332
5．Space Travel 332
6．Inside the Earth 333
7．Butterflies 334
8．The Great Pyramid 335
9．Louis Braille 336
10．Plastics and Other Materials 337
11．Trains,Trains,Trains 338
12．The First Men on Venus 339
13．More Food for a Hungry World 340
14．Thomas Alva Edison 341