9.  The areas, called "plaques", gradually thicken and harden with fibrous material, cells, and other deposits, restricting the opening of the vessel and reducing blood flow in the tissues, a condition known as "______".
【正确答案】 A
【答案解析】 这些部位(被称为“斑块”)随着纤维成分、多细胞和其他沉淀物的堆积逐渐变厚、变硬,从而限制了血管的扩张,减少了组织中的血流量,这种情况被称为“缺血”。
   ischemia“缺血”;anemia“贫血症”;anorexia“厌食症,厌食,食欲缺乏”;dyspnea“呼吸困难”。根据医学常识,题干中描述的疾病为“缺血症”。故选A。