A-A+
Which of the following statements about human
问题详情
Which of the following statements about human alveolar macrophage is TRUE？
A．Airborne dust may trigger suppressor macrophage suicides.
B．Airborne dust may trigger stimulatory macrophage suicides.
C．The ratio of suppressor macrophages to stimulatory ones in people with lung diseases is much higher than that in people with healthy lungs.
D．Only stimulatory macrophages show responses to airborne dust.
参考答案
正确答案：A
解析：该题问：下列哪一项关于人类肺泡中的巨噬细胞的陈述是正确的?见本文第七段第三句一．most of the suppressor macrophages underwent apoptosis，or cellular suicide，while the stimulatory ones survived unaffected．可知选项A正确。B项意思正好相反。从第六段可知，肺部健康的人的suppressor macrophages与stimulatory macro- phages的比例是10比1，有呼吸疾病的人则是3比1，C项意思相反。
