把下面这个长句改成几个较短的句子，可以改变语序，增删词语，但不得改变原意。

《中国自然灾害风险地图集》是在国家“十一五”科技支撑重点项目——“综合风险防范关键技术与示范”的支持下，由北京师范大学地表过程与资源生态国家重点实验室等单位共同承担，借鉴国际上目前最先进的灾害风险科研成果完成的我国第一代综合自然灾害风险分布地图集。

答：

根据短文内容，选择最佳答案。

Dear Tim,

Today is Saturday. It's 7:00 in the evening here. I'm writing to tell you something about my life. My father is watching CCTV news. That's his favorite program. My brother is playing computer games. My dog Dick is taking the hat to me. He wants me to put it on and go out for a walk with him. What a clever dog! My little sister is practicing playing the piano. It sounds beautiful today. Outside, I can hear cars and buses coming and going quickly. Also there are some boys playing ball games.

    It's really a noisy but happy evening. Do you think so?

    What are your family doing? I know the time here is thirteen hours ahead of (提前) that in New York. Are you getting up?

    Please write to me soon. Best wishes!

Yours, 

Denial