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{{B}}Cancer Drug Trials Often
Halted Early{{/B}} An increasing number of clinical trials for new cancer treatments are being halted before the risks and benefits have been fully evaluated, say Italian researchers, who warn that this growing trend could put patients at risk of harm from new therapies rushed into use. The researchers looked at 25 randomized, controlled clinical trials that were stopped early because the treatments had started to show benefit to patients. "When we analyzed 25 trials over a 10-year period between 1997 and 2007, we found a consistent increase in prematurely stopped trials—more than 50 percent were stopped within the last three years," study co-author Giovanni 更多"下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该"的相关试题: [单项选择] 阅读下面这篇短文，短文后列出了7个句子，请根据短文的内容对每个句子作出判断。如果该句提供的是正确信息，请选择A项；如果该句提供的是错误信息，请选择B项；如果该句的信息文章中没有提及，请选择C项。
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