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.
查看答案
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
以下关于红霉素说法错误的是()
A可以透过血脑屏障和胎盘屏障
B与其他大环内酯类有部分交叉耐药性
C大部分金黄色葡萄球菌对红霉素耐药
D作用机制是抑制蛋白质合成
下列抗菌药物中,对铜绿假单胞菌有效的是()
A红霉素
B林可霉素
C青霉素
D头孢哌酮
肺炎支原体感染,应首选的药物是()
A青霉素G
B红霉素
C链霉素
D林可霉素