六十年代中期开始，出现、发展了若干个计算机互连的系统，开创了“计算机——计算机”通信的时代，并呈现出多处理中心的特点。以___网(ARPAnet)为代表，标志着我们目前常称的计算机网络的兴起。

Before the Smiths moved to New York, they lived in a quiet ___(neighbor)of Boston.

Our most ________(success)product is based on a very simple idea

设A、B、C为三事件，用A、B、C的运算关系表示下列事件，A 、B、C都不发生表示为：

Being a ________(high) motivated lauguage learner, he takes every opportunity to improve his English

Critics should be as objective as possible in their_ (analyze) of literary works

在数字信号脉冲编码方案中，全宽码又称为不归零码，包括___和双极性不归零码两种。

Although they agree that life is important and should be respected, they feel that the quality of life should not __(ignore).

心理辅导的核心问题是（）

原生动物种类增加，且数目增多，说明污泥已经成熟（），出水水质好