1 . 短文改错

In early 1800’s a new kind power changed transportation and trade along the Mississippi River. This power was steam. People already knew that how to use steam engines to run machines. Some people wanted to move boats by the same way. The first steamboats to travel on the Mississippi was the “New Orleans”, which made its first trip in 1811. It was a great successful, and by 1819 there were 191 steamboats travel on the long river. In the past, the farmers products went to other parts of the country used steamboats. The manufacturers whose trade depend on cheap and easy transportation used steamboats so well.

2 . 英语课上，老师要求同桌之间相互修改作文。假设以下短文为你同桌所写，请你对其进行修改。短文中共有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。
增加:在缺词处加一个漏字符号(A)，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。
You must have heard about Dolly and have been amazed by the first cloned animal. But here came a problem; should we clone humans? When being asked about this question, a large number of people which are interested in the topic hold the view that it’s beneficial to clone humans. Therefore, some other people, me including, are against this idea. Cloning humans can bring negative effects and wrong informations. In the first place, they may not be treated equal as normal people, which I believe will make him suffer a lot. In second place, human cloning may lead in some social disorder, and it is quite dangerous.