In the second paragraph, the author suggests that "economists" would ______.
A. consult the national commission on the economy
B. plan the economy through yearly forecasts
C. consider the influence of technological innovation important
D. value the economic contribution of farm animals
具有很强的再生能力的间叶组织是
A. 纤维母细胞
B. 软骨细胞
C. 骨骼肌细胞
D. 平滑肌细胞
绞窄性腹股沟斜疝，因肠坏死而行肠切除、吻合术后，对于疝的治疗应采取
A. 单纯疝囊高位结扎术
B. Ferguson法疝修补术
C. Bassini法疝修补术
D. 无张力疝修补术
破伤风病人注射大量破伤风抗毒素的目的是
A. 控制破伤风杆菌生长
B. 减少毒素产生
C. 中和游离毒素
D. 中和游离及结合的毒素
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