题目

《西游记》《三国演义》《水浒传》和《红楼梦》是中国古典文学瑰宝，并成为中国古典小说四大名著。某中学为了了解本校学生阅读四大名著的情况，随机调查了100位学生，其中阅读过《西游记》或《红楼梦》的学生共有90位，阅读过《红楼梦》的学生共有80位，阅读过《西游记》且阅读过《红楼梦》的学生共有60位，则该校阅读过《西游记》的学生人数与该校学生总数比值的估计值为（） A . 0.5 B . 0.6 C . 0.7 D . 0.8短文改错。     假如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。     Great changes have been taken place in my village.Ten years ago, the small and low houses, which lie on the north of a lake, produced much waste.As the result, the lake was serious polluted.To the west was a sandy field, that was the source of dust.Better still, a brickyard on the southwest side of the lake used up a great deal good soil.Now the poor house have been replaced by green trees and the brickyard by tall buildings.The sandy field that the villagers used to ploughing has been covered with fruit trees.On the lake the villagers often spend his spare time boating and fishing.________________________________________________________________________________