Ⅰ.Learning Target(学习目标) 1
Unit 1 Big Bucks The Easy Way 1
Ⅱ.Background Information of the Text(课文背景知识) 3
Ⅲ.Summary of the Text(课文内容概述) 3
Ⅳ.Key Words and Expressions(重点词汇及词组) 4
Ⅴ.Difficult Sentences(难句详解) 11
Ⅵ.Model Test of Band 4(四级模拟测试) 16
Unit 2 Deer and the Energy Cycle 21
Ⅰ.Learning Target(学习目标) 21
Ⅱ.Background Information of the Text(课文背景知识) 23
Ⅲ.Summary of the Text(课文内容概述) 23
Ⅳ.Key Words and Expressions(重点词汇及词组) 24
Ⅴ.Difficult Sentences(难句详解) 36
Ⅵ.Model Test of Band 4(四级模拟测试) 40
Ⅰ.Learning Target(学习目标) 44
Unit 3 Why do We Believe that the Earth Is Round？ 44
Ⅱ.Background Information of the Text(课文背景知识) 46
Ⅳ.Key Words and Expressions(重点词汇及词组) 48
Ⅲ.Summary of the Text(课文内容概述) 48
Ⅴ.Difficult Sentences(难句详解) 56
Ⅵ Model Test of Band 4(四级模拟测试) 61
Ⅰ.Learning Target(学习目标) 65
Unit 4 Jim Thorpe 65
Ⅱ.Background Information of the Text(课文背景知识) 66
Ⅳ.Key Words and Expressions(重点词汇及词组) 68
Ⅲ.Summary of the Text(课文内容概述) 68
Ⅴ.Difficult Sentences(难句详解) 78
Ⅵ.Model Test of Band 4(四级模拟测试) 82
Unit 5 To Lie or Not to Lie——The Doctor's Dilemma 86
Ⅰ.Learning Target(学习目标) 86
Ⅲ.Background Information of the Text(课文背景知识) 88
Ⅲ.Summary of the Text(课文内容概述) 88
Ⅳ.Key Words and Expressions(重点词汇及词组) 89
Ⅴ.Difficult Sentences(难句详解) 100
Ⅵ.Model Test of Band 4(四级模拟测试) 103
Ⅰ.Learning Target(学习目标) 107
Unit 6 How to Mark a Book 107
Ⅲ.Summary of the Text(课文内容概述) 108
Ⅱ.Background Information of the Text(课文背景知识) 108
Ⅳ.Key Words and Expressions(重点词汇及词组) 108
Ⅴ.Difficult Sentences(难句详解) 111
Ⅵ.Model Test of Band 4(四级模拟测试) 115
Ⅰ.Learning Target(学习目标) 119
Unit 7 The Luncheon 119
Ⅳ.Key Words and Expressions(重点词汇及词组) 120
Ⅲ.Summary of the Text(课文内容概述) 120
Ⅱ.Background Information of the Text(课文背景知识) 120
Ⅴ.Difficult Sentences(难句详解) 125
Ⅵ.Model Test of Band 4(四级模拟测试) 126
Unit 8 The New Caves 129
Ⅰ.Learning Target(学习目标) 129
Ⅳ.Key Words and Expressions(重点词汇及词组) 130
Ⅱ.Background Information of the Text(课文背景知识) 130
Ⅲ.Summary of the Text(课文内容概述) 130
Ⅴ.Difficult Sentences(难句详解) 134
Ⅵ.Model Test of Band 4(四级模拟测试) 135
Ⅰ.Learning Target(学习目标) 140
Unit 9 Journey West 140
Ⅱ.Background Information of the Text(课文背景知识) 141
Ⅲ.Summary of the Text(课文内容概述) 141
Ⅳ.Key Words and Expressions(重点词汇及词组) 141
Ⅴ.Difficult Sentences(难句详解) 143
Ⅵ.Model Test of Band 4(四级模拟测试) 144
Unit 10 Why People Work 148
Ⅰ.Learning Target(学习目标) 148
Ⅱ.Background Information of the Text(课文背景知识) 149
Ⅲ.Summary of the Text(课文内容概述) 149
Ⅳ.Key Words and Expressions(重点词汇及词组) 149
Ⅴ.Difficult Sentences(难句详解) 151
Ⅵ.Model Test of Band 4(四级模拟测试) 152
Ⅶ.Detailed Explanation ofthe Exercises(课后练习详解) 156
Ⅷ.Detailed Explanation of the Test(模拟测试详解) 168
Ⅶ.Detailed Explanation of the Exercises(课后练习详解) 171
Ⅷ.Detailed Explanation ofthe Test(模拟测试详解) 181
Ⅶ.Detailed Explanation of the Exercises(课后练习详解) 183
Ⅷ.Detailed Explanation of the Test(模拟测试详解) 192
Ⅶ.Detailed Explanation of the Exercises(课后练习详解) 195
Ⅷ.Detailed Explanation of the Test(模拟测试详解) 204
Ⅶ.Detailed Explanation of the Exercises(课后练习详解) 207
Ⅷ.Detailed Explanation of the Test(模拟测试详解) 216
Ⅶ.Detailed Explanation of the Exercises(课后练习详解) 218
Ⅷ.Detailed Explanation of the Test(模拟测试详解) 230
Ⅶ.Detailed Explanation of the Exercises(课后练习详解) 232
Ⅷ.Detailed Explanation of the Test(模拟测试详解) 241
Ⅶ.Detailed Explanation of the Exercises(课后练习详解) 243
Ⅷ.Detailed Explanation of the Test(模拟测试详解) 251
Ⅶ.Detailed Explanation of the Exercises(课后练习详解) 254
Ⅷ.Detailed Explanation of the Test(模拟测试详解) 260
Ⅶ.Detailed Explanation of the Exercises(课后练习详解) 262
Ⅷ.Detailed Explanation of the Test(模拟测试详解) 269
Ⅸ.Chinese Versions(中文译文) 271
Ⅸ.Chinese Versions(中文译文) 275
Ⅸ.Chinese Versions(中文译文) 279
Ⅸ.Chinese Versions(中文译文) 283
Ⅸ.Chinese Versions(中文译文) 289
Ⅸ.Chinese Versions(中文译文) 292
Ⅸ.Chinese Versions(中文译文) 296
Ⅸ.Chinese Versions(中文译文) 300
Ⅸ.Chinese Versions(中文译文) 303
Ⅸ.Chinese Versions(中文译文) 307
