注意：1）词数100词左右

        2）可以适当增加细节，使行文连贯

Dear Tom,

Yours,

Li Hua

将100个数据分成①～⑧组，如下表所示：

那么第④组的频率为（　　）

一批西瓜，第一天卖出总数的一半，第二天卖出238个，还剩下217个。这批西瓜原来有多少个?

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。

    Last Friday, Just before the 66^th National Day holiday, I conducted interview with James Watson, a famous American scientist, talk about how to become a successful scientist. On his opinion, to be a scientist, we needed to be very fond of science. What's most, we have to keep practicing as well as learn from other successful scientist. If we want to be a successful one, besides hard-working, we are supposing to set up for a clear goal as well. James Watson also suggest that every child who is curiously about science should make your effort to realize the dream of becoming a scientist.