上前牙3／4冠邻轴沟的方向为（）
A.与牙长轴平行
B.与唇面切2／3平行
C.与舌面切2／3平行
D.与唇面龈1／3平行
E.与舌隆突平行
参考答案：B
超硬石膏粉水比例约为（）
A.100g：25ml
B.100g：35ml
C.100g：45ml
D.100g：55ml
E.100g：16ml
When you read English articles, do not _____ your dictionary as soon as you meet new words you can guess
them first. [ ]
A. look on
B. look for
C. look at
D. look after
