单选题 The old woman is chronically ill in bed and seldom goes out.
【正确答案】 C
【答案解析】chronically慢性地,习惯性地,长期地。四个选项:seriously认真地,真诚地;dangerously危险地;continually不断地,频繁地;incurably治不好地,不能矫正地。