以上药物酸性最强的是
A. 苯巴比妥酸，pKa3．75(未解离率0．022%)
B. 己锁巴比妥，pKa8．4(未解离率90%)
C. 苯巴比妥，pKa7．4(未解离率50%)
D. 异戊巴比妥，pKa7．9(未解离率75%)
E. 戊巴比妥，pKa8．0(未解离率80%)
与巯基互为生物电子等排体的基团
A. 酰胺基
B. 巯基
C. 磺酸基
D. 羟基
E. 烷基
用以表示药物脂溶性的参数
A. pKa
B. lgP
C. 酸性药物
D. 碱性药物
E. pH
The author's primary purpose in writing this passage was to ______.
A. plead for the abolishment of uniforms
B. show that uniforms are not possible in a democratic society
C. discuss the pros and cons of wearing uniforms
D. convince the reader that uniforms have more disadvantages than advantages
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