气象小组测得绵阳某天的最高气温是+12℃,最低气温是-2℃.这天的最大温差是______.
12℃-(-2℃)=14℃,
故答案为:14℃.
She _______herself ______as an American.
A.passed ;off
B. passed; through
C.passed; on
D. passed; by
简述原始社会教育的形态和特征