2013年职称英语(理工类A级)考前预测试卷

　　第3部分：概括大意与完成句子(第23～30题，每题1分，共8分)
　　下面的短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第1～5段每段选择1个最佳标题；(2)第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项。

　　23．Paragraphs 1&2______________.

　　24．Paragraph 3______________.

　　25．Paragraph 4______________.

　　26．Paragraph 5______________.

　　

　　27．One advantage of CD—RWs is that they can____________like floppy disks．

　　28．The author predicts it will not before a new technology is invented for music recording．

　　29．The laser beam—emitting device and the receiver are considered to___________0f a CD player．

　　30．Space probes could not____________ without using digital codes．