A
In the beginning, the computer was as large as a room. This worried the designers. As time went by, it became smaller and smaller. With artificial intelligence, it was getting ___1___ (smart) and quicker. In the early 1960s, computers ___2___ (connect) by a network, which enabled their users to share information with others. Since the 1970s, computers ___3___ (become) very important in communication, finance and trade.
【答案】1. smarter
2. were connected
3. have become
【解析】
这是一篇说明文。简要介绍了电脑的发展历程。
【1题详解】
考查形容词比较级。句意：有了人工智能，它变得越来越聪明，越来越快。根据下文and quicker可知应填形容词比较级smarter。
【2题详解】
考查被动语态。句意：在20世纪60年代早期，计算机通过网络连接，用户可以与其他人共享信息。本句中主语computers与谓语动词connect构成被动关系，且根据时间状语In the early 1960s应用一般过去，主语为复数，故填were connected。
【3题详解】
考查动词时态。句意：自从20世纪70年代以来，计算机在通讯、金融和贸易方面变得非常重要。根据时间状语Since the 1970s可知应用现在完成时，主语为复数，故填have become。
