下列每一组数据中的三个数值分别为三角形的三边长，不能构成直角三角形的是（   ）

两个因数的积是5.2，其中一个因数扩大到它的5倍，另一个因数扩大到它的2倍，积是多少？

借助画梅花表达了怎样一种人生态度？

    Yao Ming, the center of the Chinese National Men's Basketball Team, served the Huston Rockets in NBA．The 2.26 m, 120 kg center（中锋） becomes the first one to come from a foreign team．
    Yao Ming was born in Shanghai in September, 1980．His mother was a center and captain of the Chinese National Women's Team．His father played basketball, too．
    Yao Ming is widely known in China．He came to be a very important basketball player in China Basketball Association （联赛）．It's short for CBA．During the 2000～2001 season, he did very well．He got 27．1 scores for the Shanghai Oriental （东方） Sharks in every match．
Yao Ming joined the Houston Rockets in November, 2002．He said this was a new start in his basketball life．He would do his best to learn from the NBA and improve himself．
    Sport analyst （分析家） Bill Walton said, “Yao Ming has the potential （潜力）, the capability（能力） of changing the future of basketball．”

依次填入下列各句横线处的词语，最恰当的一组是（）
①各级政府在发展经济的同时，还要多想办法，积极拓展再就业之路，以便使更多的下岗工人得到合理的。
②在破解开发型资源城市转型难题的过程中，该市______原有资源，以钒钛资源开发为重点，努力打造世界级的产业集群。
③作者科尔曼年轻气盛，观点鲜明，但常常论据不足或论证不周，_______显得犀利有余，老练不够。