When I was growing up in America, I was ashamed of my mother's Chinese English. Because of her English, she was often treated unfairly. People in department stores, at banks, and at restaurants did not take her seriously, pretended not to understand her, or even acted as if they did not hear her.
My mother has realized the disadvantages of her English as well. When I was fifteen, she used to have me call people on phone to pretend I was she. I was forced to ask for information or even to yell at people who had been rude to her. One time I had to call her stockbroker. I said in a voice that was not very convincing, "This is Mrs. Tan." And my mother was standing beside me, whispering loudly, "Why he doesn't send me the cheek. It's already two weeks late."
And then, in perfect English I said: "I'm getting rather anxious .You agreed to send the check two weeks ago, but it hasn't arrived."Then she talked more loudly. "What does he want? I'll come to New York and say it in front of his boss."And so I turned to the stockbroker again, "I can't accept any more excuses. If I don't receive the check immediately, I have to speak to your manager when I am in New York next week."
The next week we ended up in New York. While I was sitting there red-faced, my mother, the real Mrs. Tan, was shouting to his boss in her broken English. When I was a teenager, my mother's broken English embarrassed me. But now, I see it differently. To me, my mother's English is perfectly clear, perfectly natural. It is my mother tongue. Her language, as I hear it, is clear and direct. It was the language that helped me form the way I saw things, expressed ideas, and made sense of the world.
【小题1】Why was the author's mother poorly treated?

【小题2】From Paragraph 2, what can we know about the author?

【小题3】What does the author think of her mother's English now?

【小题4】What can we infer from the passage?

【小题5】What is the best title of the passage?

为测定实验室中某过氧化氢溶液的溶质质量分数，小明取25.0g 过氧化氢溶液放入烧杯中，然后进行如图Z5﹣1所示的实验．请计算：

阅读下文，回答问题

学会转身

董建昌

    ①一个木匠丢了一块手表，几个热心的邻居一起帮他找，他们将地上的刨花、工具箱，以及木匠身上的每一个口袋都翻烂了也没有找到，结果却让一个孩子找到了。木匠很惊讶，问那孩子是怎么找到的。孩子说，很简单啊！你知道，手表是有声音的，我只是在你们都安静下来的时候坐到刨花旁听，然后沿着声音的方向走过去，就找到了。

    ②事实上，在遇到困难时只要稍稍转个身，我们看到的就会是一个崭新的天空，就像丢失在刨花里的那块表，大人们翻烂了刨花，找遍了工具箱，甚至木匠的口袋，都没能找到，而那个孩子只是换了一个寻找的角度，即凭借手表指针“嘀嗒、嘀嗒”的走动声就轻易地找到了。

    ③换个角度看问题，往往可以化难为易、化繁为简。卡耐基说：“一个人要想让自己的生活愉快、自在，在事业上取得重大的成就，学会变通是很重要的。”一次，爱迪生让助手帮助自己测量一下一个梨形灯泡的容积。助手接过后，立即开始了工作，他一会儿拿游标卡尺测量，一会儿在稿纸上计算，后来甚至还动用了一些复杂的数学公式。可几个小时过去了，他忙得满头大汗，还是没有算出结果。就在助手搬出大学里学过的知识，准备再一次计算灯泡的容积时，爱迪生进来了。爱迪生看到助手面前摆满了各种工具书和身旁的那一堆稿纸，立刻就明白了怎么回事。于是，他拿起灯泡，朝里面倒满水，递给助手说：“你去把灯泡里的水倒进量杯里，就会得出我们所需要的答案。”这时，忙得满头大汗的助手才恍然大悟：自己想的太复杂了。看来，学会变通，善于让自己的思维转身是很重要的。

    ④是的，我们很多人就像爱迪生的助手一样，做事不知道变通，结果是花费了很多力气，到头来却一事无成。遇到看似难解的问题，学会换一种思维，从不同角度看，这样，“无法解决”的问题就变得简单化了，而这，才是真正的大智慧。

    ⑤1916年，美国犹他州的小镇准备修建一座银行。镇长买好了地，备好了建筑图纸，可最后在砖头上出现了问题。因为，从盐湖城用火车运砖过来，每磅要2.5美元。这个价格远远超出了镇里的预算。后来，大家又想了许多种货运方式，甚至包括空运都不行。就在人们束手无策的时候，不知谁说了句，邮寄砖啊！结果是，包裹每磅邮费是1.05美元，比火车便宜了一半多。

    ⑥这样，小镇的居民很骄傲地拥有了他们的第一家银行。更为有趣的是，这个故事后来还被西点军校作为案例选入了教材，用来诠释一条校训：要保持“头脑简单”，敢于去干所谓“办不到”的事情。

    ⑦通过邮局邮寄货物，这无疑是最常见的运输方式，然而，就是这样一个常见、简单而又便捷的方式，很多人就是想不到。为什么呢？他们就是将简单问题复杂化了。把最复杂的变成最简单的，才是最高明的（达芬奇语）。细想，我们生活中我们缺少的，不正是达芬奇说的这种将问题简单化的思维嘛。

    ⑧同一件事，如果依照同样的习惯思维去运作，肯定不会有新的改变。但若能改变一下固有的思维方式，转个身，用不同的方法去开拓，自然会结出不同的硕果。学会转身，学会换一个角度看问题，从而把看似复杂的事情简单化，你就会发现人生其实好简单，成功其实离你也并不远。

阿拉伯数字在我们的学习、工作和生活中运用相当广泛，它的发明者和传播者分别是（   ）

将下面两个图形重叠后，会变成（）。