因拔牙导致细菌性心内膜炎的最重要病原菌为()
A.甲型溶血性链球菌
B.金黄色葡萄球菌
C.变形链球菌
D.内氏放线菌
E.混合细菌感染
参考答案:A
He offered the information the police needed and deserved _____.[ ]
A. rewarded
B. to reward
C. being rewarded
D. rewarding
简述人体必需的营养素。