对烧伤人员的急救应迅速扑灭伤员身上的火,尽快脱离火源。
参考答案:对
通过观察、计算,探索规律。
32﹣12=4×2=(3+1)(3﹣1),
52﹣22=7×3=(5+2)(5﹣2),
82﹣32=11×5=(8+3)(8﹣3),
…72﹣42=( ),102﹣62=( ),请用你发现的规律填空:a2﹣b2=( )。
We tried to find a table for seven, but they were all_________. [ ]
A. given away
B. kept away
C. taken up
D. used up