Unit 1 The Developing World 1
Topic 1 Our country has developed rapidly 1
Section A 1
Section B 2
Section C 4
Section D 6
单元巧存盘 7
Topic 2 What a large population! 10
Section A 10
Section B 12
Section C 14
Section D 15
单元巧存盘 17
Topic 3 The world has changed for the better 20
Section A 20
Section B 22
Section C 24
Section D 25
单元巧存盘 27
Unit 2 Loving Our Planet 31
Topic 1 Pollution causes too many problems 31
Section A 31
Section B 32
Section C 34
Section D 36
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Topic 2 All these problems are very serious 41
Section A 41
Section B 43
Section C 44
Section D 46
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Topic 3 Would you like to be a greener person? 51
Section A 51
Section B 52
Section C 54
Section D 56
单元巧存盘 58
Unit 3 English Around the World 62
Topic 1 English is widely used throughout the world 62
Section A 62
Section B 63
Section C 65
Section D 66
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Topic 2 English is spoken differently in different countries 71
Section A 71
Section B 73
Section C 74
Section D 76
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Topic 3 Could you give us some advice on how to learn English well? 81
Section A 81
Section B 82
Section C 84
Section D 86
单元巧存盘 87
Unit 4 Amazing Science 92
Topic 1 Spaceships are mainly controlled by computers 92
Section A 92
Section B 93
Section C 95
Section D 96
单元巧存盘 98
Topic 2 When was it developed? 101
Section A 101
Section B 102
Section C 104
Section D 106
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Topic 3 We will live in space one day 110
Section A 110
Section B 112
Section C 114
Section D 115
单元巧存盘 117
期中测试 121
期末测试 127