A．appropriateB．uniqueC．reliableD．dependent

A． essentialB． availableC． reliableD． responsible

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材料题请点击右侧查看材料问题 查看材料A.ownB.uniqueC.oth

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She picked up a dress ____ for the occasion.A.appropriateB.importantC.fitD.comfortable

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We tried to make our guests ____.A.appropriateB.importantC.fitD.comfortable

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【C12】A．positiveB．uniqueC．identicalD．favorable

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选择表中若干行使用命令SELECT时应使用子句（)。A.INTOB.UNIQUEC.ORDERBYD.WHERE

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允许取空值但不允许出现重复值的约束是______。A.NULLB.UNIQUEC.PRIMARY KEYD.FOREIGN KEY

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