从美学的角度来看,两眼内眦间距与眼裂左右宽度之比的理想值为()
A.1.5:1
B.1:1
C.0.5:1
D.0.8:1
E.2:1
参考答案:B
Tom and Mary have the same grandfparents. But they don't have the same (相同的) parents.
So Tom is Mary's ______. [ ]
A. cousin
B. brother
C. uncle
牙龈增生是下列哪种药物的特异不良反应
A.苯巴比妥B.苯海拉明C.苯妥英钠D.丙戊酸钠E.乙琥胺