题目

Thousands of people illnesses in dirty hospitals in the nineteenth century.A.died of B.gave up C.agreed with D.got together 答案：【答案】A【解析】句意：十九世纪，成千上万的人死于肮脏的医院里的疾病。考查动词短语辨析。died of死于；gave up放弃；agreed with同意；got together在一起，根据所给空后面的illnesses in dirty hospitals可知，应该是死于，故选A。 关于x的方程有两个不相等的实数根，则k的取值范围是           。