It is not socially _____ for parents to leave children unattended at that age.    [ ]

A. accessible                

B. adorable    

C. adaptable                  

D. acceptable

The notice of casualty to a vessel must include（）.

A.a request for assistance

B.the location of the unit at the time of the casualty

C.an estimate of the cost to repair damages

D.the amount of fuel remaining