IELTS 数据-Gbase-Database-组合优于继承：优先使用组合关系。 Practice Tests
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Total questions: 7
- 7- Summary, form completion
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Total questions: 3
- 3- Plan, map, diagram labelling
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Total questions: 5
- 5- Plan, map, diagram labelling
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Total questions: 6
- 6- Summary, form completion
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Total questions: 5
- 5- Summary, form completion
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Total questions: 4
- 4- Multiple Choice
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Total questions: 4
- 4- Summary, form completion
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Total questions: 6
- 6- Summary, form completion
