第3题: [单项选择]The reason why the car stopped was ______ . A. because the road was not good B. that the road was not good C. due to the bad road D. because of the bad road 参考答案:B
第9题: [单项选择]调制解调器的功能是实现 (48) 。 A. 数字信号的编码 B. 数字信号的整型 C. 模拟信号的放大 D. 模拟信号与数字信号的转换 参考答案:D 答案解析:[解析] 调制解调器即Modem,俗称为“猫”,它能将数字信号转换成模拟信号在电话网上传送,也能将接收到的模拟信号转换成数字信号。由于目前大部分个人计算机都是通过公用电话网接入计算机网络的,因而需通过
A. continuous B. continual C. continued D. constant 参考答案:D 答案解析:[译文] 宇宙万物经历不断的发展和变化。 [解析] 考查形容词辨析。constant意为“不断的,永恒的”,in constant change意为“总在不断地变化”,所以为正确答案。c