简述贯彻启发性原则的基本要求。

同一目的生物，它们一定是 [ ]

A．同一属

B．同一纲

C．同一种

D．同一科

《三国志演义》的叙事结构有何特点？

Many of the activities performed during the preliminary investigation are still being conducted in（）, but in much greater depth than before. During this phase, the analyst must become fully aware of the（） and must develop enough knowledge about the （） and the existing systems to enable an effective solution to be proposed and implemented. Besides the（）for process and data of current system, the deliverable from this phase also includes the （） for the proposed system.

A．main symptom

B．root problem

C．final blueprint

D．data specification

积分商城推广活动的积分专席热线是（）

A.10086

B.100868

C.1008618

D.1008616

人物动态速写，根据动作状态可分为（）动态速写与运动性动态速写。

A.静止

B.有规律

C.无规律

D.变化