第5题: [单项选择]A young man is being hailed a hero tonight after rescuing two children. A. reported B. proved C. caught D. praised 参考答案:D 答案解析:[解析] 划线词hail的词义是“向……欢呼致贺”。 A项report意为报告。例句:It is reported that 20 people were killed in the acc
第6题: [单项选择]JJG2×××-××××表示()。 A. 国家计量检定规程 B. 国家计量技术规范 C. 国家计量检定系统表 D. 国家标准 参考答案:C