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 10 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（从第 11 处起）不计分。
My father often took me to his hospital when I was off my school. He showed me how his medical instruments was used. I felt so closely to him. However, after I went to high school, somehow I become distant from him. I was unwilling talk with him and often disobeyed his rule of not stay out with my friends too late. The disagreement was too sharp that neither he nor I knew what to settle it. One day,he talked with me or hoped to mend our relations. With the efforts made by all sides,we began to understand each other better.
1.去掉 my
2.was→were
3.closely→close
4.become→became
5.talk 前面加 to
6.stay→staying
7.too→so
8.what→how
9.or→and
10.all→both
为了解某地农村经济情况，对该地农户家庭年收入进行抽样调查，将农户家庭年收入的调查数据整理得到如下频率分布直方图:
甲、乙两城之间的长途客车均由 A 和 B 两家公司运营，为了解这两家公司长途客车的运行情况，随机调查了甲、乙两城之间的 500 个班次，得到下面列联表：
设点M在直线2x+y-1=0上，点(3,0)和 (0,1)均在M上，则M的方程为
已知向量a=(m,3),b=(1,m+1).若a⊥b,则m=__________.
在长方体ABCD- A1B1C1D1,中，已知B1D与平面ABCD和平面AA1B1B所成的角均为30°，则()
