语法与词汇 For many patients, institutional care is the most _____ and beneficial form of care.

【正确答案】 B

【答案解析】句意：对许多病人而言，慈善机构的护理是最适当、最有益的护理方式。appropriate适当的。persistent不屈不挠的；不断的。thoughtful深思熟虑的；体贴的。sufficient足够的。