问答题 Tell the sense relation between a and b in each pair;(2 points)1)a. John studied in Tokyo.b. John studied in Japan. 2)a. Mary helped Jane.b. Jane was helped by Mary.

【正确答案】正确答案：1)a. John studied in Tokyo. b. John studied in Japan. A entails b. 2)a. Mary helped Jane. b. Jane was helped by Mary. A and b are synonymous.

【答案解析】解析：考查句子之间的语义关系。句子之间有预设、蕴涵、同义等语义关系。预设是指说话者为保证句子或语段的合适性而必须满足的前提，A预设B，当且仅当：A真B必真，A假B亦真，B真A可真可假；A蕴涵B，当且仅当：A真B必真，A假B可真可假；A与B同义时，A／B同真假。