第24题: [单项选择]Passage 3 Questions 33 to 35 are based on the passage you have just heard. A. Listening to skilled people’s advice. B. Asking older people many questions. C. Making mistakes and having them corrected. D. Learning what other people do without being taught. 参考答案:D 答案解析:[听力原文] 33-35 Let children learn to judge their own work. A child learning to talk does not le
第33题: [单项选择]数字签名技术不能解决下列的 (14) 行为。 A. 抵赖 B. 伪造 C. 篡改 D. 窃听 参考答案:D 答案解析:[解析] 数字签名技术可以用于对用户身份或信息的真实性进行验证与鉴定,它通过使用数字摘要算法、公开钥算法保证数据传输的不可抵赖性、真实性、完整性,但是不能保证密文不被第三方获取,所以数字签名技术不能解