磁体中磁性最强的两端称为（）。
A、磁场；
B、磁力线；
C、磁极；
D、磁效应
参考答案：C
_____, I have to put it away and focus my attention on study this week. [ ]
A. However the story is amusing
B. No matter amusing the story is
C. However amusing the story is
D. No matter how the story is amusing
高侵剖面
