题目类型：
填空题
题目内容
The research and development in information and data retrieval is aimed 31_____ improving the effectiveness and efficiency of retrieval. Individual and parallel development 32_____ database management systems has left this sector 33_____ a centralized vision and coordination 34_____ the different types of search engines. Search engines 35_____ the Internet are very specific and not able to cope with multiple database formats and file types.
34.
34.
正确答案
between
AI解析
此题中，空格34需要填入一个表示不同事物之间关系的介词。根据句意，此处指的是在信息检索领域，由于个体和并行发展数据库管理系统，导致该领域缺乏对各种搜索引擎的集中式视野和协调。因此，应使用“between”表示“在……之间”，强调不同搜索引擎之间的缺乏协调。所以，正确答案是“between”。