抑制骨吸收,改善钙平衡,促进骨钙素分泌,加速骨形成为()
A.钙制剂
B.氟化剂
C.维生素D
D.维生素K
E.蛋白同化激素(苯丙酸诺龙)
参考答案:D
It’s ___________ /'nesɪsərɪ/ for us to help parents do chores on weekends.
A.surprisingly
B.necessary
C.successfully
D.suppose
TCR识别Ag后向细胞传递信息的分子是()
A.CD2
B.CD3
C.CD4
D.CD8
E.CD28