【C4】A．directionB．guideC．symbolD．model

A．pursueB．guideC．aimD．direct

A．guideB．modelC．symbolD．direction

【C13】A．directionB．distributionC．distractionD．contraction

Many people like white color as it is a _______ of purity.A. signB. signalC. symbolD.

【C5】A．signalB．demonstrationC．symbolD．indication

The Unified Modeling Language is a standard graphical language for modeling object－orient