Are you positive that there's been no mistake?

admin2020-12-24 13

问题 Are you positive that there's been no mistake?

选项 A:rational
B:reasonable
C:certain
D:bound

答案C

解析本句意思：“你能肯定没有错误吗?" certain：必然的，无疑的，与画线部分词义相近。rational：理性的；reasonable：合理的；bound：有义务的。

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