【正确答案】
Nowadays computers have been widely used in China. We can easily find all kinds of computers everywhere, especially in large cities. Many people fondly call it an electronic brain.
Computers have become our companions because they can help us so much. They are useful in many ways. As we all know, scientists use computers to do experiments, analyze data, and solve large equations. Engineers use computers to control complicated industrial productions, design circuits and machine parts or even space ships. Writers and editors use computers to write hooks, edit newspapers and magazines. And office workers use computers to keep files, send and receive e-mails, etc. There are many other examples and more new applications are still developing.
In short, computers can do a variety of jobs from routine office work to research work of science and technology.
Though computers do not think intelligently as man, with good software they can carry out tasks impossible for human beings.

【答案解析】[解析] 一篇150个词的英文短文基本按照开头段——中间段——结尾段的框架搭建。开头段应用能够吸引读者注意力的语言点明主题，使读者了解文章的主旨(Thesis)。中间段落经常是作文的主干内容，其主要功能在于支持说明或论证上段提到的文章的主题，在每一个段落的首句一般为段落主题句(Topic sentence)。跟着主题句的是支持性句子，其内容可以是事实、数据、故事或专家意见等，主要功能用来帮助段落主题句说明文章主题。结尾段落用来归纳概括或重新说明主题观点，也可以用来说明观点、提出建议、做出评论或针对文章提出的问题指出具体的办法。