In face of patents monopolies on medicine, some poor countries______.
A．justified their production of antiviral drugs
B．have initiated anti-patent arguments recently
C．are forced to produce low-cost antiviral drugs
D．have prepared an affordable therapy for patients

A.
A．justified
B.have
C.are
D.have

【参考答案】

C
根据第一段所说的“巴西等发展中国家政府认为人命比专利重要”以及“泰国自己生产治疗艾滋病的药物使患者看得起病”，C应为。