公安消防部队灭火战术方法有哪些？
参考答案：
堵截、突破、夹攻、合击、分割、围歼、排烟、破拆、封堵、监护、撤离。
我市峨眉山上某天的最高气温为12℃，最低气温为-4℃，那么这天的最高气温比最低气温高[ ]
A.4℃
B.8℃
C.12℃
D.16℃
He was admitted to our school two years ago, a top school in our hometown, _____ he has been crazy about reading electronic novels, killing time.
A．after that
B．since that
C．after when
D．since when
