22．Lawrence Craven, a doctor from the USA，is the author of several published rep
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22．Lawrence Craven, a doctor from the USA，is the author of several published reports, one of______ introduced the idea in 1953 ______aspirin could reduce the risk of heart attacks．| A．them; when | B．which; that | C．what; that | D．which; when |
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答案
| B |
解析
| 考查从句。第一个空考查定语从句，which 用于介词后指代前文的reports。第二个空是由that引导同位语从句。具体说明idea的详细内容。 |
举一反三
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