To put his wife _____ and to guarantee a promise of top secrecy, a husband may claim that a

life-threatening assignment is just a business trip.        [ ]

A. in danger  

B. on time    

C. at ease        

D. with ease

推上磨牙向远中的非适应证是（）

A.磨牙远中关系

B.磨牙近中关系

C.无第三恒磨牙

D.轻度牙列拥挤

E.上第二恒磨牙未萌