肠溶衣片（）。
A．在胃中保持完整而在肠道内崩解或溶解的片剂
B．较适合于儿童或吞咽困难的患者，在口中嚼碎后咽下的片剂
C．可避免药物的肝脏首过效应，也可防止胃肠液pH及酶对药物的不良影响的片剂
D．含在口腔或颊膜内缓缓溶解而发挥治疗作用的片剂
E．可避免药物的肝脏首过效应，起局部作用或全身治疗作用，含有高分子粘附性聚合物的片剂
参考答案：A
解析：
［知识点］ 片剂的分类
阅读下面短文，掌握其大意，然后从21—30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。 Wouldn't it be great if we didn't have to remember passwords (密码) ever again？If we could just sit in front of our computers and be 21 logged in (登录? Crave mentions how NECSoft BiodeLogon system uses face recognition technology to log you on to Windows, rather than using a 22 All you need is a webcam and your pretty face to 23 your PC. No more 24 , confusing passwords to remember or change every few months. After doing a little research, I found this type of 25 already available to consumers via a relatively 26 application called FaceCode. The 27 requires the use of a webcam to recog- nize and log PC users into their systems. You can add as many 28 as you want, provided they each have a Windows account. If the system 29 to recognize your 30 , you can recall the Windows user name and password by using a hot-key combination.
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