Are you positive that there's been no mistake?

admin2020-12-24  16

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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