单项选择题

PEG比浊沉淀法检测CIC的特异性（）

A.最好，不受干扰
B.较差，易受干扰
C.较好，不受干扰
D.最好，易受干扰

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A．He was kidnapped eight months ago.B．He failed in his negotiations with the Africans.C．He was assassinated in Central Africa.D．He lost lots of money in his African business.

填空题

经典脑筋急转弯说它是牛不是牛，力小能背房子走。（打一动物）（）