问题：
[单选题]We took mother to all the best hospitals we could find, but all our efforts were in______; She passed away last month. A.validB.vainC.vacantD.vague
答案解析：
您可能感兴趣的问题
- Don’t Blame DNA The really critical implication of the discovery still lies with the door that gene
- The relationship between politicians and the press In the seaside town of Brighton in southern Engl
- Expressionism Expressionism is an art movement that produced a wealth of wonderful works of art, an
- 回顾过去60年，中俄关系走过了不平凡的发展历程。这印年，是两国政治关系日益走向成熟的60年。1996年4月，两国领导人在认真总结历史经验教训的基础上，从两国人民根本利益出发，顺应时代潮流，着眼两国关系
- 新挑战中往往蕴含着新的机遇。对于中英两国来说，危机将促使我们延伸和拓宽互利合作的内涵。目前，中国各级政府和部门，正在积极落实保持经济稳定增长的各项举措。伴随大规模民生工程、基础设施和生态环境等领域的建
- “十五”时期国民经济和社会发展主要情况 过去五年，我们摆脱了亚洲金融危机带来的冲击，战胜了非典疫情和重大自然灾害，不失时机地推进改革开放，进一步发挥市场配置资源的基础性作用，加强和改善宏观调控，保持
- At the World Literary Center, an organization that works to help people read, the helpers work hard,
- These observations indicates the extreme difficulty in cultivating this precious thing called democr
- Variations in the color of sea water from blue to green seem to be caused by high or low concentrati
- For years an acrimonious debate over how to protect heroin users impeded efforts in the U.S. to cont