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To demonstrate the potential of this new approach, two filler geometrics （） (use): sandglass and cheese segment.　(在判断该句在摘要的哪部分内容中出现的基础上，填入所给动词的适当形式)

To demonstrate the potential of this new approach, two filler geometrics （） (use): sandglass and cheese segment.　(在判断该句在摘要的哪部分内容中出现的基础上，填入所给动词的适当形式)
正确答案：were used
标签：研究生英语科技论文写作 动词 部分内容
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下一条：This paper（） (investigate) a new strategy for radio resource allocation applying a non-orthogonal multiple access (NOMA) scheme. (在判断该句在摘要的哪部分内容中出现的基础上，填入所给动词的适当形式)