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短信。信中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。请按照下列格式修改：
增加：在缺词处加一个漏词符号（∧），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：在错的词下画一横线，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。
Time flies! This is a third year that I have been in this school. In the past two and a half years, our school had organized many activities. What impressed me best was an activity called “Learning to Farm”. In an autumn afternoon, we were sent to a farm which we learned to plant potatoes. Having been in the city for so a long time, we were so happy to go to the countryside. After divided into 3 groups, we started to work. Some students cut potatoes into pieces; some dug holes, and the others put the pieces into the hole, put the earth back and pushed them down hard. We continued doing that until all the work was done. Although we were exhausted, but we felt fulfilled on our way back home.
学英语报纸外研版2021试题答案
阅读七选五
Trees around us are extremely important and have always been necessary for improving the human conditions. Our existing forests and trees we plant work to make a better world. 1.. Here is a short list of main reasons trees are necessary for improving our living conditions.
●Trees produce oxygen
2.. A leafy tree produces as much oxygen in a season as 10 people inhale in a year. What many people don't realize is that the forest also acts as a giant filter (过滤器) that cleans the air we breathe. Trees help clean the air by preventing airborne particles, reducing heat, and absorbing such pollutants.
●Trees clean the soil
The term phytoremediation is a fancy word for the absorption of dangerous chemicals and other pollutants that have entered the soil. 3.. Trees filter sewage and farm chemicals, reduce the effects of animal wastes, clean roadside spills and so on.
●Trees are carbon sinks
To produce its food, a tree absorbs and locks away carbon dioxide in the wood, roots and leaves. Carbon dioxide is a global warming suspect.