用配方法解一元二次方程x²＋3＝4x，下列配方正确的是(   )

阅读材料，回答下列问题。

材料一：一位美国历史学家在谈到某次战争前的欧洲形势时说：“欧洲变成一只‘火药桶’，只等一粒火星将它引爆。”

材料二：第一次世界大战统计表

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Everyone wants to be successful. But failure is a common(普通的) thing for us to meet with.

    1, sometimes we fail the exams, sometimes in the sports meet, others 2 but we fail. So 3 everybody meets with the failure in his life.

   However, different people have different 4 to deal with the failure. Some people lose hope when they fail. They seem to think that it is the 5 of the world. Others, on the other hand, don't take failure 6. They seem to think that failure is the first step(步骤) to success. They will keep up and try their best 7 the final success.

    Now let's imagine(猜想) the ends of the two ways. If we are afraid of the failure and always feel 8, and don't try our best to change ourselves, we may meet with more and more failures. But as long as we are hopeful and brave to face them, and never give up, we will 9 successful and our dreams will come true some day.

    So, please remember: Life doesn't give us the pleasure we want. But if we never give up and 10 do little by little, it will make a big difference.