The engineers in this lab spent several weeks______their plans for the new bicyc

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问题 The engineers in this lab spent several weeks______their plans for the new bicycle.

选项 A、counting
B、stripping
C、elaborating
D、casting

答案 C

解析句子的大意为：工程师在这个实验室里花费了数周时间来详细制作他们关于新型自行车的计划。A项count“数，计算”B项strip“剥，剥去”；C项elaborate“精心制作，详细阐述”；D项cast“投，抛，派(角色)”。

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