Joe has $50 to spend on pizza and movies. If movies are $5 each and a pizza is $10 then, assuming he spends all his money, he can buy which of the following bundle of goods?
【简答题】丙型肝炎病毒感染,下列说法不正确的是A. 抗HCV是中和抗体,具保护性 B.抗HCV是HCV感染的标志性物质 B. HCV-IgM 阳性可作为HCV活动性复制的血清学标志 C. HCV-IgM 与慢性丙肝患者的急性发作有关 D. 丙肝病毒是导致丙型肝炎的重要病原体 E. 抗HCV是HCV感染的标志性物质