In recent years, high-tech equipment ＿＿＿＿＿＿＿＿ of causing the greatly increased cost of medical care._未知科目_远程教育查题网

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题目：In recent years, high-tech equipment ＿＿＿＿＿＿＿＿ of causing the greatly increased cost of medical care.
- A. has been accused
- B. is accused
- C. has accused
- D. is being accused
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