人的体细胞有46条染色体,细胞分裂后,染色体数目是[ ]
A.46对
B.47条
C.46条
D.23条
答案:C
In ______, people don't eat with their left hand. [ ]
A. Japan
B. Brazil
C. Muslim countries
D. Indonesia
评价医学诊断效能的方法中,反映检出疾病的能力是()
A.灵敏度
B.特异性
C.准确性
D.假阳性率
E.假阴性率