第13题: [单项选择]关于ADSL技术的描述中,正确的是( )。 A. 用户端和局端都需要分离器 B. 仅用户端需要分离器 C. 两端都不需要分离器 D. 仅局端需要分离器 参考答案:A 答案解析:[解析] ADSL(非对称数字用户线)由中央交换局侧的局端模块和用户侧的远端模块组成。连接这两个模块的双绞线都接入了一个分离器(POTS分离器)。
第17题: [单项选择]Passage Three Questions 32 to 35 are based on the passage you have just heard. A. A change in the status of educated. B. A change inthe nature of reading. C. An increase in the number of books. D. An increase in the average age of readers. 参考答案:B 答案解析:[听力原文] What did the development of silent reading during the nineteenth century indicate