下列有关实验设计达不到实验目的（ ）
A．
大致了解各层火焰温度
B．
探究空气中氧气体积分数
C．
收集氢气
D．
探究微粒的运动
答案：B
A few people were killed in the fire, but _____ were saved.[ ]
A. the most
B. most of whom
C. the majority of whom
D. the majority
露点
