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阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。An experimental antiviral medication might help fight the new coronavirusBy Nicole WetsmanFeb 4, 2020, 5:25 pm ESTA single case study isn’t enough to prove anything. It’s not clear if the medication, called remdesivir, actually helped the patient, or if his improvement was a coincidence. But it’s one of a few drugs, 【1】 (include) a combination of anti-HIV drugs, 【2】 doctors think might help patients with the new coronavirus.Remdesivir was developed by the pharmaceutical company Gilead as已知是方程＋5x－4=0的两个根，且，则下面结论正确的是 [　　] A．不是实数B．＞0，＜0 C．＞0D．＜0，＞0