1 Travelling 1
Vocabulary Exercises 1
Grammar Exercises 2
Comprehensive Practice 3
2 Space 8
Vocabulary Exercises 8
Grammar Exercises 9
Comprehensive Practice 10
3 Animals 15
Vocabulary Exercises 15
Grammar Exercises 16
Comprehensive Practice 17
4 Scientists 22
Vocabulary Exercises 22
Grammar Exercises 23
Comprehensive Practice 24
5 Sports 28
Vocabulary Exercises 28
Grammar Exercises 29
Comprehensive Practice 30
6 Water 34
Vocabulary Exercises 34
Grammar Exercises 35
Comprehensive Practice 36
7 Holidays 42
Vocabulary Exercises 42
Grammar Exercises 43
Comprehensive Practice 44
8 Learning a Language 48
Vocabulary Exercises 48
Grammar Exercises 49
Comprehensive Practice 50
9 Foreign Countries 55
Vocabulary Exercises 55
Grammar Exercises 56
Comprehensive Practice 57
10 The Internet 62
Vocabulary Exercises 62
Grammar Exercises 63
Comprehensive Practice 64
Revision 1 69
Test A 69
Test B 74
Revision 2 81
Test A 81
Test B 88
补充阅读 97