成语典故“破釜沉舟”与下列哪位历史人物有关? [ ]
A、孙膑
B、刘邦
C、项羽
D、吴广
答案:C
已知 命题甲:函数f(x)=lg(ax2+ax+1)的定义域为(-∞,+∞);命题乙:函数g(x)=lg(x2-ax+1)的值域为(-∞,+∞).若上述两个命题同时为真命题,则实数a的取值范围为______.
Not a single word ______ when ______ about his family and his experiences in the beginning.[ ]
A. the young man said, asked
B. did the young man say, asked
C. the young man said, asking
D. did the young man say, to ask