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问题 选择题

以西安一杨凌高新区为中心的高新技术产业密集区是（　　）

A．环渤海高新技术产业密集区

B．沿长江高新技术产业密集区

C．东南沿海高新技术产业密集区

D．沿亚欧大陆桥高新技术产业密集区

答案

我国四大高新技术产业密集区是：以深圳高新区为中心的东南沿海高新技术产业密集区；以上海高新区为中心的沿长江高新技术产业密集区；以北京中关村科技园区为中心的环渤海高新技术产业密集区；以西安-杨凌高新区为中心的沿亚欧大陆桥高新技术产业密集区．

故选：D．

选择题
20世纪初在中国大地上，第一个举起社会主义大旗的是 （   ）
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单项选择题

OOP languages that create objects, such as (1) and (2) are beginning to take hold as viable tools for programmers. To effectively reuse objects, programmers need a place to store them such as an ODBMS or a RDBMS with object oriented extensions.

Databases that handle object data not only let user store and retrieve (3) data, but also let them store objects created by OOP languages, to facilitate rapid software development and reuse, and let them (4) new multimedia applications combining multiple data types.

RDBMS vendors have developed new extensions to existing DB technology to accommodate the most common forms of (5) data.

（5）是（）

A.numeric

B.FORTRAN

C.build

D.unstructured
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