大学英语晚听教程（下册）
2011-8
科学出版社
邹晓燕 等主编
189
《大学英语晚听教程(上册)》由20个单元组成，每个单元分为4个部分：第一部分：8个短对话和2个长对话；第二部分：3篇短文；第三部分：2篇复合式听写。
试题部分
Unit 1
Monday
Tuesday
Wednesday
Thursday
Unit 2
Monday
Tuesday
Wednesday
Thursday
Unit 3
Monday
Tuesday
Wednesday
Thursday
Unit 4
Monday
Tuesday
Wednesday
Thursday
Unit 5
Monday
Tuesday
Wednesday
Thursday
Unit 6
Monday
Tuesday
Wednesday
Thursday
Unit 7
Monday
Tuesday
Wednesday
Thursday
Unit 8
Monday
Tuesday
Wednesday
Thursday
Unit 9
Monday
Tuesday
Wednesday
Thursday
Unit 10
Monday
Tuesday
Wednesday
Thursday
参考答案及录音材料
In a relatively short span of twenty-five years, there has been an incredible evolution inthe size and capabilities of computers. Today, computers smaller than the tips of yourfingernail have the same capacities as the room-sized machines of twenty five years ago. Thefirst computers were developed around 1945. They were so large that they required specialair-conditioned rooms. About twenty years later, in the 1960s, desk-sized computers weredeveloped. This represented an enormous advance. Before the end of that same decade,however, the third generation of computers, which used simple integrated circuits and whichwere even smaller and faster, had appeared. In 1971, the first microprocessor, less than onesquare centimeter in size, was developed. Today, electronic engineers predict that even smallerand more advanced computer will be on the market before the end of this decade. 16. When were the first computers developed？ 17. When were the desk-sized computers developed？ 18. When was the first microprocessor developed？ ……
