在数学活动课上，同学们用一根长为1米的细绳围矩形．

（1）小明围出了一个面积为600㎝²的矩形，请你算一算，他围成的矩形的边长是多少？

（2）小明想用这根细绳围成一个面积尽可能大的矩形，请你用所学过的知识帮他分析应该怎么围，并求出最大面积．

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Nuli told us what he wanted to be a scientist when he                                    1.       

was in his childhood.He worked hard at all his lesson                                          2.       

and tried to enter into a famous university in China,                                     3.       

but he failed because the Cultural Revolution,which                                     4.       

forced him to make a living at the age of 16.He serves                                  5.       

as a farmer then a worker,but he spent his spare                                           6.       

time studied and was finally admitted into a local college.                              7.       

He often says,“Young guys,do not lose the heart                                                 8.       

when you are in trouble.Believe in yourself forever,                                     9.       

so you will surely make great progress sooner or later.”                                 10.