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VOLUME THREE1

UNIT ONE2

Text： Difficulties in Noise Control3

Language Points ＆ Background Information4

Exercises about the Text8

Enjoy English10

Grammar： Numeral Cardinal Numbers12

Writing Skill： Types of Paragraphs （1）13

UNIT TWO15

Text： Animals of the Desert16

Language Points ＆ Background Information17

Exercises about the Text23

Enj oy English25

Grammar： Numeral— Ordinal Numbers27

Writing Skill： Types of Paragraphs （2）28

UNIT THREE30

Text： Marriage and Divorce31

Language Points ＆ Background Information32

Exercises about the Text37

Enjoy English38

Grammar： Fractions and Decimals40

Writing Skill： Paragraph Development— Process41

UNIT FOUR42

Text： Weather and Climate43

Language Points ＆ Background Information44

Exercises about the Text49

Enjoy English51

Grammar： Expressions of the Year， the Month， the Date and the Time54

Writing Skill： Paragraph Development— Definition55

UNIT FIVE56

Text： Color57

Language Points ＆ Background Information58

Exercises about the Text62

Enjoy English64

Grammar： Nouns67

Writing Skill： Paragraph Development— Classification and Analysis68

UNIT SIX70

Text： Online Education71

Language Points ＆ Background Information72

Exercises about the Text78

Enjoy English80

Grammar： Nouns and Numbers83

Writing Skill： Paragraph Development— Comparison and Contrast86

UNIT SEVEN88

Text： Why Are We Fat？89

Language Points ＆ Background Information90

Exercises about the Text94

Enjoy English96

Grammar： Nouns and Case99

Writing Skill： Paragraph Development— Cause and Effect100

UNIT EIGHT101

Text： Teens and Tobacco102

Language Points ＆ Background Information103

Exercises about the Text108

Enjoy English109

Grammar： Nouns and Gender ＆ Grammatical Functions of the Noun110

Writing Skill： Paragraph Development Persuasion and Argumentation112

UNIT NINE113

Text： Cheating on Campus114

Language Points ＆ Background Information115

Exercises about the Text121

Enjoy English122

Grammar： Articles125

Writing Skill： Methods of Paragraph Development126

UNIT TEN128

Text： Go Fly A Kite129

Language Points ＆ Background Information131

Exercises about the Text137

Enjoy English138

Grammar： Articles before the Proper Noun140

Writing Skill： Review of Writing Skills143

VOLUME FOUR144

UNIT ONE145

Text： The Birth of Blue Jeans146

Language Points ＆ Background Information147

Exercises about the Text151

Enjoy English153

Grammar： The Performance of “than”154

Writing Skill： Writing Effective Business Letters （1）156

UNIT TWO157

Text： Advertising： The Selling of A Product158

Language Points ＆ Background Information160

Exercises about the Text165

Enjoy English167

Grammar： Pronouns170

Writing Skill： Writing Effective Business Letters （2）171

UNIT THREE173

Text： Fuzzy Logic Smarter Machines174

Language Points ＆ Background Information176

Exercises about the Text182

Enjoy English183

Grammar： Personal Pronouns ＆ Possessive Pronouns186

Writing Skill： Writing Application Letters189

UNIT FOUR191

Text： Economic Effects of Terrorist Attacks192

Language Points ＆ Background Information193

Exercises about the Text198

Enjoy English199

Grammar： Self Pronouns ＆ Reciprocal Pronouns202

Writing Skill： Writing an Effective Resume203

UNIT FIVE205

Text： Newspapers206

Language Points ＆ Background Information208

Exercises about the Text212

Enjoy English214

Grammar： Demonstrative Pronouns ＆ the Performance of “in”216

Writing Skill： Research Paper Writing （1）220

UNIT SIX221

Text： Driver Education222

Language Points ＆ Background Information224

Exercises about the Text230

Enjoy English231

Grammar： Interrogative Pronouns ＆ Relative Pronouns234

Writing Skill： Research Paper Writing （2）235

UNIT SEVEN236

Text： Hobbies237

Language Points ＆ Background Information238

Exercises about the Text243

Enjoy English245

Grammar： 1. Indefinite Pronouns 2. The Use of Indefinite Pronouns （1）247

Writing Skill： Research Paper Writing （3）250

UNIT EIGHT252

Text： A Television Production253

Language Points ＆ Background Information255

Exercises about the Text259

Enjoy English260

Grammar： The Use of Indefinite Pronouns （2）264

Writing Skill： Research Paper Writing （4）265

UNIT NINE266

Text： Soccer Becomes Part of European Culture267

Language Points ＆ Background Information269

Exercises about the Text273

Enjoy English275

Grammar： The Use of Indefinite Pronouns （3）277

Writing Skill： Research Paper Writing （5）279

UNIT TEN280

Text： How to Deal with Winning the Lottery281

Language Points ＆ Background Information282

Exercises about the Text287

Enjoy English290

Grammar： The Agreement Between the Subject and the Predicate292

Writing Skill： Research Paper Writing （6）—Final draft295

APPENDIX Ⅰ - Answers to the Exercises of Volume Three296

UNIT 1296

UNIT 2298

UNIT 3300

UNIT 4302

UNIT 5304

UNIT 6306

UNIT 7308

UNIT 8310

UNIT 9312

UNIT 10314

APPENDIX Ⅱ -Answers to the Exercises of Volume Four316

UNIT 1316

UNIT 2318

UNIT 3320

UNIT 4322

UNIT 5324

UNIT 6326

UNIT 7328

UNIT 8330

UNIT 9332

UNIT 10334

APPENDIX Ⅲ Simulated Tests336

Simulated Tests336

Answers to the Simulated Tests353