设p是椭圆$\frac{x^2}{25}+\frac{y^2}{16}=1$上的点．若$F_1,F_2$是椭圆的两个焦点，则$\left|P{F}_1\right|+\left|P{F}_2\right|$等于(    )

曲线y=x³+x ²在点P₀处的切线平行于直线y=4x，则点P₀的坐标是（  ）

雅典公民大会的决议有的尚需经陪审法庭审议并最后批准：五百人会议主要是一个行政机构，但它又拥有一定的立法权和司法权。据此可知，雅典的国家机构（   ）

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                                                                                                                                 读(节选)  
                                                                                               人之一生．读之一生    读海，胸怀将变得辽阔
                                                                                               从春读到夏，从小读到大  读月，方知阴晴圆缺
                                                                                               读雨，方知万物可以滋润，心灵能够洗涤    

                                                                                               读日，便不再惋惜日近黄昏
                                                                                               读雪，能领悟到嚣的纯洁，感受到冬的春意             用心品读，细细感悟
                                                                                                读风，就能触摸d4)11的脉搏，聆听天地的呼吸      阴雨中能读出晴空
                                                                                               读霞，才能于苍茫中发现辉煌，展示自己韵不屈     枯黄中能读出翠绿
                                                                                               读花，你学会倾听     沙漠中能读出清泉
                                                                                               读树，你学套成长       黑暗中能读出晨曦
                                                                                               读山，你学会攀登                                     

                                                                                                                                                                                                                                          (诗歌有删改)