Which of the following would the nurse expect to include in a community health program designed to control sexually transmitted diseases (STDs)

A．Mass screening of all individuals.

B．Location of the possible sources of infection.

C．Treatment of those with the disease.

D．Isolation of those suspected of having STDs.

男，56岁，午餐后不久感胸闷、大汗，心前区压迫样疼痛。监护中突然发现频发室性期前收缩。

指导病人服用异山梨酯，起效最快的服法是（）。

A．含化

B．吞服

C．嚼碎后口含一段时间

D．用酒送服

E．掰碎后吞服