| Unit 1 Cultural relics Part 1 Text Explanations Part 2 Typical Problems Part 3 Synchronous Test Part 4 Key and Hint Unit 2 The Olympic Games Part 1 Text Explanations Part 2 Typical Problems Part 3 Synchronous Test Part 4 Key and Hint Unit 3 Computers Part 1 Text Explanations Part 2 Typical Problems Part 3 Synchronous Test Part 4 Key and Hint Unit 4 Wildlife protection Part 1 Text Explanations Part 2 Typical Problems Part 3 Synchronous Test Part 4 Key and Hint Unit 5 Music Part 1 Text Explanations Part 2 Typical Problems Part 3 Synchronous Test Part 4 Key and Hint |
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