下面关于Pc机连网接入技术的叙述中，错误的是：
A． 采用电话拨号接入时，由于用户终端与交换机之间传输的是模拟信号，所以必须安装MODEM
B． 采用电话拨号接入时，目前数据传输率已可达1Mb/s
C． 采用ADSL接入时，为了能在一对铜质双绞线上得到三个信息通道，采用了相应的数字信号调制解调技术，因而必须安装特殊的ADSL MODEM
D． 采用有线电视网接入方式时，它利用有线电视的某个频道通过对数字信号进行调制实现数据传输，因而必须安装Cable MODEM
参考答案：B
解析：电话拨号接入时数据传输速率实际并未达1Mb/s。所以B的说法是错的。
| 任务型阅读。 | |
| Qian Zhongshu was one of the most well-known Chinese 1 to the western world. Born on November 21, 1910 in Wuxi, Jiangsu Province, he grew up with his uncle, who didn't have a son. Qian liked reading books and had a 2 memory (记忆力). He only needed to read something once before learning it by heart. 5 He showed his good memory (记忆力) at an early age. When he was a small boy, his uncle often 3 him to tea houses. He liked reading story books in the tea houses. When they returned home, he could repeat the stories to his cousins. Qian went to Tsinghua University in 1929. Although he failed his math test, 6. he entered the university because he was so good at Chinese and English. In Tsinghua University he met his wife Yang Jiang, who is one year 4 than him and a famous writer, too. They married in 1935. 7. 两年以后，他们的女儿钱媛出生了。 Qian died of illness on December 19, 1998. He left many works to the world. His most famous novel, Fortress Besieged (围城), came out in 1947. It has been translated into (已经被翻译成) more than six foreign languages. 任务一： 用下列方框中所给词的适当形式完成文中1 2 3 4 四空，使其语意正确，逻辑合理。 （每词限用一次， 每空限填一词）
任务二： 将 5 处划线句子翻译成汉语。 5.___________________________________________________________________. 任务三： 将 6 处划线句子进行同义句转化。 6.he entered the university because he ______ so ______ ______ Chinese and English. 任务四： 将 7 译成英语。 7.____________________________________________________________________. |