离子的饱和度
参考答案：被土壤吸附的该离子量占土壤阳离子交换量的百分数。
The teacher is strict _____ every student and _____ everything he does. [ ]
A. in; on
B. on; with
C. with; on
D. with; in
简析《暴风骤雨》的内容和情节结构特点及其不足。
