阅读下列短文，从每小题所给的A、B、C、D四个选项中选出一个最佳选项．

    Henry Bond was about seven years old when his father died．His mother found it 1to support the large family．However，she tried her best to do so．Also，she 2Henry，the eldest son，to school．

    At one time，Henry needed a grammar book for his study．His family was so 3that his mother could not afford one．

    One morning，Henry found that a deep snow had fallen，and the 4wind was blowing．"Ah，"he said，"it is an ill wind that blows nobody good．"With these words，he ran to the house of a neighbor，and offered his 5to move away the snow around it．The offer was accepted．When he finished the work，he received his 6．Then he went to another place for the

7purpose，and then to anther，8he had earned （挣得） enough to buy a grammar book．

    From that time，Henry was 9the first in all his classes．He knew no such word as"10"，and he succeeded in all he tried to do．Having the will，he always found the way．

若x²=9，则x=____．

依次填入下面一段文字横线处的语句，衔接最恰当的一组是（3分）    （   ）
围棋棋子按颜色区别黑白二方，但所有棋子在功能上无任何区别，性能相同，地位相等。     ，      ，      ，      。       _；      。这与我国传统农业社会的思维方式如出一辙：想要保有地盘，就要使地盘连成一片；想要地盘不失，就必须以所有城池作为依托。
①而欲想占领地盘，就必须至少有两口各自独立的“气眼”
②要想生存发展，就必须拥有根据地
③“气眼”就是自己的活动空间
④围棋胜负的标志就是所占地盘之大小
⑤对方不得侵入，象征着中国古代的城池
⑥而要有根据地，就必须有回旋的空间

反应A（g）+B（g） C（g）+D（g）过程中的能量变化如图所示，回答下列问题。

By nine o’clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, ____appeared a rare rainbow soon.