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5.1 Ideological Thinking and Discussion for U4
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5.2 Task 3 Allergies (II)
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5.3 Task 4 A special treatment
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5.4 Task 7 Online doctors put patients at risk
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5.5 Task 8 How can personalized music be used in health care?
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5.6 Task 9 The rising pharma industry in China
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5.7 DIsscusion for U4 (2)