甲、乙两人共同解方程组，由于甲看错了方程①中的a，得到方程组的解为$\left\{\begin{array}{c}x=-3\\ y=-1\end{array}\right.$；乙看错了方程②中的b，得到方程组的解为$\left\{\begin{array}{c}x=5\\ y=4\end{array}\right.$，试计算a²⁰¹²+（$-\frac{1}{10}$b）²⁰¹³的值．

商代统治者凡事都要通过占卜予以决定，这一现象说明我国早期古代政治制度的一大特点是（  ）

根据下列句子及所给汉语注释，在句子空缺处写出各单词的正确形式（每空只写一词）。
 There are about two ____ （百）students playing on the playground.
  The mother is ____ （自豪的）of her son, because he is very successful in his work.
 There are many kinds of English ____（字典）in this bookstore. You can choose the one you like.
  Look at the photo____ （仔细地），and you will find our teacher.
 Would you mind____（打开）the window? We need some fresh air.