用于诊断心衰最敏感的指标是（）
A.脑钠肽
B.D-二聚体
C.儿茶酚胺
D.尿皮质醇
E.C反应蛋白
参考答案：A
Last summer holidays, he went to the countryside and worked together with farmers.In this way
he learnt________from farmers. [ ]
A. a great many
B. a great deal
C. scores of
D. much more
监狱工作方针的精神贯穿于（）之中。
A.监狱理论研究
B.监狱工作实践
C.监狱制度创新
D.监狱法律规范
