> summary(lm.re)
Call:
lm(formula = height ~ age)
Residuals:
     Min       1Q   Median       3Q      Max
-0.27238 -0.24248 -0.02762  0.16014  0.47238
Coefficients:
            Estimate Std. Error t value Pr(>|t|)   
(Intercept)  64.9283     0.5084  127.71  < 2e-16 ***
age           0.6350     0.0214   29.66 4.43e-11 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
Residual standard error: 0.256 on 10 degrees of freedom
Multiple R-squared:  0.9888,    Adjusted R-squared:  0.9876
F-statistic:   880 on 1 and 10 DF,  p-value: 4.428e-11

得到以上结果，怎样才能将这些保存为excel格式的文件呢？