治疗流行性脑膜炎应首选()
A磺胺嘧啶
B青霉素
C红霉素
D林可霉素
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金黄色葡萄球菌引起的急性骨髓炎，最佳选药是()
A庆大霉素
B红霉素
C青霉素G
D林可霉素
不良反应为假摸性肠炎的是()
A红霉素
B林可霉素
C青霉素
D万古霉素
人们有了更多的闲暇时间，因而对各种服务的需求增长得如此快。
A. People now have more leisure time, that is why the demand for services has increased so rapidly.
B. People now have more leisure time, which is the reason why the demand for services has increased so rapidly.
C. People now have more leisure time, which is the reason why the demand for services has been increased so rapidly.
D. People now have more leisure time, which is why the demand for services has been increased so rapidly.
下列抗菌药物中，对铜绿假单胞菌有效的是()
A林可霉素
B红霉素
C头孢曲松
D青霉素
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