题干

2009年我国化石能源基础储量和年产量如表


基础储量

年产量

石油

28.33亿吨

1.89亿吨

天然气

32 124亿立方米

851.7亿立方米

3 261亿吨

930.5亿吨

(1)根据表中数据计算石油最多开采的年限?(计算结果保留整数)

(2)根据你的计算并结合表,就化石能源的使用谈谈拟合看法(答出3点).

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答案(点此获取答案解析)

解:(1)28.33亿吨÷1.89亿吨/年≈15(年)

(2)合理使用或减少利用、合理开采、开发使用新能源.

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    It impressed me a lot, I never thought that little help will turn out to be the most satisfying thing I have ever done.

    One day I met a man on my way home. He was tired, and1 to climb further. With a broad2 he asked if I could help him with some money. He was paralyzed (瘫痪) in both legs and was 3 funds for some operation. He said that if operated successfully, he could 4a training guaranteeing him a job. I was full of 5 and even asked him to show his legs. I gave him the6 money. After a few days, he again came at my doorstep asking for more money for accommodation. This time I was more or less 7 he is not cheating me. I gave him some and said this is all I have.

    A year went by and I had moved to a(n)8 place. One fine day I got a call from an unknown number. Caller called out his name but I didn't 9 him. Then he said he is the very paralyzed person I helped a year ago.

    I asked him, “How are you doing now.” He said, “Sir, you recognize me not by my name but by my10state.” “With your kind help I am now able to 11 on my legs without support. I was operated 12I am married to a beautiful lady. Besides I have a good job and stable 13.

    I don't 14 remember if I gave him my phone number15 what he said next was touching. He said he wanted to return my money so that I didn't feel cheated and continue to help people 16 in the future. I don't know whether he read my facial expression the day I helped him but tears were 17 down my face. That day I18 him that I will continue to help people as I see a(n)19—small or big. It is the small event that makes a big 20 to my life.