对红霉素的描述,错误的是()
A.吸收后可广泛分布至各组织和体液
B.可透过胎盘屏障
C.可透过血脑屏障
D.主要在肝脏代谢
E.可形成肝肠循环
参考答案:C
She enjoys________new ways of doing things because she thinks she can get much enjoyment by doing that. [ ]
A. leaving out
B. letting out
C. trying out
D. working out
新生儿期是指出生后()天之内。
A.7
B.14
C.21
D.28