灭火剂按灭火原理可分为物理灭火剂和()灭火剂。
A、二氧化碳
B、7150
C、化学
D、干粉
参考答案:C
________ any other species, human populations are shaped by the usual forces of natural selection, like
famine, disease or climate. [ ]
A. Compared with
B. As with
C. As for
D. In addition to
“让学校的每一面墙壁都开口说话”、 “让学校的一草一木,一砖一石都发挥教育影响”。这体现的德育方法是( )
A.说服法
B.榜样法
C.锻炼法
D.陶冶法