She came in for      coffee and told me         traffic kept her awake last night. [ ]

A. a, the

B. a, 不填

C. the, the

D. the, 不填

下列哪些预防措施是针对传染病接触者的（）

A.医学观察

B.留验

C.应急接种

D.药物预防

E.住院隔离