磁防垢是利用磁铁的强磁性来()碳酸钙的形成.
A、促进
B、分解
C、破坏
D、催化
参考答案:C
—Do you think the rain will stop tomorrow?
—______. It has rained for ten days. It's too wet everywhere. [ ]
A. I hope not
B. I'm sure it is
C. I'm afraid it will
D. I hope so
县级以上人民政府公安机关,经上级公安机关或同级人民政府批准,对严重危害社会治安秩序的突发事件,可以根据情况实行现场管制。( )