Pick an answer to check it
wrongNot this one · the answer is DExplanation
A model presents the structure clearly and vividly, so it goes with “生动” (vivid) and D is correct. “糟糕” (terrible) and “过期” (expired) are negative or do not fit the context, while “无限” (unlimited) cannot modify “表现出来” (presented).
原文 · transcript
而是采用实物模型,把天空的结构生动地表现出来。