用秦九韶算法求多项式f（x）=1+2x+x²﹣3x³+2x⁴在x=﹣1时的值，v₂的结果是（　　）

如果x²﹣（m+1）x+1是完全平方式，则m的值为（　　）

材料一：1640年的革命和1789年的革命，并不是英国的革命和法国的革命，这是欧洲范围的革命。它们不是社会中某一阶级对旧政治制度的胜利，它们产生了欧洲新社会的政治制度。

材料二：我们认为下面这些真理是不言而喻的：人人生而平等，造物者赋予他们若干不可剥夺的权利，其中包括生命权、自由权和追求幸福的权利。我们以这些殖民地的善良人民的名义和权力，谨庄严宣告：这些联合殖民地从此成为，而且名正言顺地应当成为自由独立的合众国，……

材料三：大国崛起靠的是科技，国与国之间的较量说到底是国民素质的较量，是人才的较量。英国历史学家汤因比研究过21种在历史上曾经出现过、后来相继消亡的文明，结论是……他们失去了创新的活力，被历史淘汰出局。

    After twenty-third hour at night, the house was quiet. I didn't go to bed. Under the strong light, I looked sadly before me at a huge pile of that troublesome thing they call “books”.

    I would have my important examination the next day. “When can I go to bed?” I asked myself. I didn't answer, in fact I dared not.

    As soon as the clock struck twelve, I suddenly heard and couldn't help crying “Oh, dear! Many more books to read before I can go to bed!” We students are the most wretched creatures in the world. Dad does not agree with me on this. He didn't have to work so hard when he was a boy.

    When the clock struck one, I felt I was hopeless now. I forgot all I had learned. I was too tired to go on. I did the only thing I could. I prayed, “Oh, God, please help me pass the exam tomorrow. I do promise to work hard afterwards, Amen.” My eyes were so heavy that I could hardly open them a few minutes later, with my head on the desk, I fell asleep.