题目内容
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限一词。
2．只允许修改10处，多者（从第11处起）不计分。
Jim arrived in home and discovered that he has forgotten his door key．He rang the bell, but nobody came to open the door．He rang again and waiting, but still there was not reply．He walked round the house to see if he could find the open window, but they were all locked．It was beginning to rain, he did not know how to do．Kate, his wife, had obvious gone out．He didn’t know where she had gone or when she would return．Finally, picked up a stone, he threw them at the kitchen window．Just then, his wife came back．
1.去掉in
2.has ---- had
3.waiting ----waited
4.not --- no
5.the --- an
6.he前加but
7.how --- what 
8.obvious—obviously
9.picked—picking
10.them—it
【解析】
1.到家”，直接说arrived home。
2.
3.
4.
5.
6.
7.
8.
9.
10.
考点：考查短文改错
同步练习强化拓展系列答案
ail: bdu@chinadaily．com．cn;URL:http://www．chinadaily．com．cn/bdu 
people would think that aside from comets(彗
星) and stars, there is little else out there. But, since our space journey started we have left so much trash（垃圾） there that scientists are now concerned that if we don't clean it up, we may all be in mortal （致命的）danger.
roblem with the space trash is that it may hit working satellites and damage traveling spacecraft(飞船). Moreover, pieces of junk may collide（碰撞） with each other and break into pieces which fall back to the Earth. To avoid this, scientists have invented several ways for clearing the sky. Ground stations have been built to monitor larger p
any nations to stop littering in space and to clean up the trash already there.