预防风湿热的关键是

A．防治链球菌感染

B．手术摘除感染的扁桃体

C．注射长效青霉素

D．磺胺类药物预防性治疗

E．长期口服小剂量阿司匹林

Here is a practical tip I         from my mother.

A．took up

B．gave up

C．made up

D．picked up