急性心肌梗死患者发病24小时内不用洋地黄制剂，避免增加心肌耗氧量致心肌梗死范围扩大。（）
参考答案：对
A new survey shows that 54% of Americans do not take prescription medicines _______ though they are important to their health. [ ]
A. as they instruct
B. as were instructed
C. as to be instructed
D. as instructed
关于金黄色葡萄球菌的叙述错误的是
A．脓液稠，黄色，不臭B．革兰染色阳性C．产生溶血素D．主要引起丹毒E．也能引起全身化脓性感染
