材料一：

材料二在各国的变法中，秦国的商鞅变法成效最大，公元前356年，秦孝公任用商鞅主持变法．商鞅推行一系列改革措施，使秦国的固力大为增强，提高了军队的战斗力，一跃成为最强盛的诸侯国，为以后秦统一全国奠定了基础．

一一摘自七年级《中国历史》上册

材料三：

请回答：

短文改错

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有l0处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1)．每处错误及其修改均仅限一词；

      2)．只允许修改10处，多者(从笫11处起)不计分。

    I'm Wang Hong, a international student of Beijing University. I have something to talk with you. During last year's winter holiday, I go shopping with my classmates. While we were walking on the street, we saw several beggar standing on the road and asking for money. Many of them were disabling, which made me feel very much sad. Among them were old people, young people and even children. I noticed some passers-by ignore them instead of given them money. When I wanted to help them, my classmates stopped us. They told me whether these beggars were not worth showing mercy to because most them cheated people. Should I helped them?

下列不等式中，一元一次不等式有（　　）

①x²+3＞2x  ②$\frac{1}{x}$﹣3＞0  ③x﹣3＞2y  ④$\frac{x-1}{\mathrm{\pi }}$≥5π   ⑤3y＞﹣3．

下列表示骨、关节和肌肉关系的示意图中，正确的是（    ）