木材的燃点为（）℃。
A、50～100
B、100～150
C、250～300
D、300～350
参考答案：C
Last week, only two people came to look at the house,________wanted to buy it. [ ]
A. none of them
B. both of them
C. none of whom
D. neither of whom
劳动能力鉴定时限规定？
