阅读下面短文，从下列各题所给的 A、B、C 三个选项中，选出可以填入空白处的最佳选项。
American President Roosevelt's house was once broken into and lots of things were stolen. Hearing this, one of Roosevelt's friends wrote to him and 1 him not to take it to his heart so much. President Roosevelt 2 back at once, saying, “Dear friend, thank you for your letter to comfort me. I'm all right now. I think I should thank God. This is because of the following three 3: firstly, the thief (小偷) only stole things from me 4 did not hurt me at all; secondly, the thief has stolen some of my things 5 all my things; thirdly, most 6 for me, it was the man 7 me who became a thief.”
It was quite unlucky for anyone to be stolen from. However, President Roosevelt was so 8.
It is 9 for anyone to be lucky and successful all the time as long as he lives on the earth. We should learn how to 10 failure or misfortune bravely and to try to deal with it. Being thankful can bring us a better life.
CO2(g)＋H2(g)。当反应达到平衡时，CO的体积分数为x。若维持容器的体积和温度不变，起始物质按下列四种配比充入该容器中，达到平衡时CO的体积分数大于x的是( )
