A. CAI becomes an alternative or a supplement to the traditional instruction and enriches instructional material.

电脑辅助教学逐渐成为传统教学的补充教案或者替代方案。

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Instructional design models can also be used to assess existing educational material and help in everyday planning.

教学设计模型也能用来评价现有的教学材料，对每天的计划都有益处。

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Then, the thesis spreads the steps of the TBL process, and explains the material instructional events.

然后对该流程中各教学环节分别展开叙述，提出教学过程中涉及的具体事件。

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He had piles of instructional material on making ricin and other poisons, but his plans for their use remained unknown.

CNN: Ricin: Almost never deadly