强吸电子基团，影响电荷分布和脂溶性
A. 卤素
B. 羟基
C. 烃基
D. 酰胺
E. 酯
The author compares rain forests to coral reefs because ______.
A. they are approximately the same size
B. they share many similar features
C. most of their inhabitants require water
D. both have many different forms of life
用以表示药物解离度的参数
A. pKa
B. lgP
C. 酸性药物
D. 碱性药物
E. pH
与受体可以有偶极形式结合的基团
A. 酰胺基
B. 巯基
C. 磺酸基
D. 羟基
E. 烷基
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