Unit 1 Scientific Research科学探究 1
Lesson 1 Observation观察 1
Key Words 1
Text Observation in Science科学中的观察 3
Scientific English Expressions 科技英语的特点 4
Practice 8
Reading Observation Method观察方法 10
Lesson 2 Measurement测量 11
Key Words 11
Text Measurement测量 12
Scientific English Expressions 尺寸和属性的表达 15
Practice 19
Reading Thermometer温度计 22
Unit 2 Living World生命世界 24
Lesson 3 Plants植物 24
Key Words 24
Text Trees树木 25
Scientific English Expressions科技英语构词法 27
Practice 34
Reading Factors Affecting the Growth of Plants影响植物生长的因素 35
Lesson 4 Seed Germination种子发芽 37
Key Words 37
Text Requirements for Seed Germination种子发芽的条件 39
Scientific English Expressions 科技英语常用词例析 42
Practice 54
Reading Seeds种子 56
Lesson 5 Animals动物 57
Key Words 57
Text Introduction to Dogs狗的介绍 60
Scientific English Expressions科技表达中的比较与情态 63
Practice 67
Reading Flatfish比目鱼 70
Lesson 6 Food Chains食物链 72
Key Words 72
Text Food Chain食物链 73
Scientific English Expressions 科技论述中的关系从句 75
Practice 80
Reading Herd兽群 82
Lesson 7 Biological Evolution生物进化 84
Key Words 84
Text Evolution进化 86
Scientific English Expressions 表示过去的科技论述 88
Practice 95
Reading Genes基因 97
Unit 3 Material World物质世界 99
Lesson 8 Light光 99
Key Words 99
Text Light Sources光源 101
Scientific English Expressions 科技英语中的定义 103
Practice 109
Reading Shadow影子 111
Lesson 9 Friction摩擦力 112
Key Words 112
Text Friction摩擦力 113
Scientific English Expressions 表格和图表 116
Practice 121
Reading Brief Introduction to Friction摩擦力简介 122
Lesson 10 Electricity电 124
Key Words 124
Text Electrostatics静电学 125
Scientific English Expressions 数字表达与冠词 126
Practice 135
Reading How Electricity Works电是如何工作的 138
Lesson 11 Air空气 139
Key Words 139
Text Air空气 142
Scientific English Expressions科技英语中的被动结构 144
Practice 151
Reading Wind风 153
Lesson 12 Chemicals化学物质 155
Key Words 155
Text The Classification of Inorganic Compounds无机化合物的分类 157
Scientific English Expressions 化学科技英语 162
Practice 169
Reading Chemistry in life生活中的化学 170
Lesson 13 Solution溶液 172
Key Words 172
Text Solution溶液 173
Scientific English Expressions 实验和说明的描述 175
Practice 179
Reading The Determination of the Pomegranate Juice石榴汁的纯度鉴定 181
Unit 4 Earth and Universe地球与宇宙 184
Lesson 14 Day and Night昼夜 184
Key Words 184
Text Day and Night昼夜 186
Scientific English Expressions 科技英语中的简洁表达 188
Practice 194
Reading The Teaching Design of"Day and Night” 《昼夜》的教学设计 195
Lesson 15 Seasons季节 197
Key Words 197
Text Seasons四季 199
Scientific English Expressions 科技英语翻译（一） 201
Practice 214
Reading About Season关于季节 216
Lesson 16 Climate气候 217
Key Words 217
Text The Global Climate May Keep Increase全球气温可能会继续上升 218
Scientific English Expressions 科技英语翻译（二） 220
Practice 224
Reading The Effect of Greenhouse on Rock温室效应对岩石的影响 226
References 228