This is the best hour I can         I          in the past twelve years.  [ ]

A. know; have had                  

B. remember; had

C. think of; have had                  

D. think out; had

用于从疟疾流行区归来的外来人员传播的药物是（）

A.氯喹

B.奎宁

C.青蒿素

D.伯氨喹

E.蒿甲醚