2. 自考
  3. which, who, whom, what, where, when The treatment, _______ is being tried by researchers at four hospitals, has helped patients

which, who, whom, what, where, when The treatment, _______ is being tried by researchers at four hospitals, has helped patients

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问题 which, who, whom, what, where, when
The treatment, _______ is being tried by researchers at four hospitals, has helped patients ______ have failed to respond to other remedies.
选项
答案which，who
解析 第一空的先行项是the treatment且在关系分句中作主语，因此引导词应为which。第二空的先行项是patients且在关系分句中作主语，因此引导词应为who。答案为which，who。
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