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Unit 1 Fighting Stress
　　Reading A
　　Digging in
　　Listening, Viewing and Speaking
　　Reading B
　　Critical Thinking
　　Writing
　　Further Exploration
Unit 2 Cherishing Friendship
　　Reading A
　　Digging in
　　Listening, Viewing and Speaking
　　Reading B
　　Critical Thinking
　　Writing
　　Further Exploration
Unit 3 Exploring the Unknown
　　Reading A
　　Digging in
　　Listening, Viewing and Speaking
　　Reading B
　　Critical Thinking
　　Writing
　　Further Exploration
Unit 4 Protecting the Environment
　　Reading A
　　Digging in
　　Listening, Viewing and Speaking
　　Reading B
　　Critical Thinking
　　Writing
　　Further Exploration