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。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∧，并在其下面写出该增加的词。删除：把多余的词用（/）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）在答题卡第Ⅱ卷的第六节的题上答题。
3）只允许修改10处，多者（从第11处起）不计分。
What would people like to eat on their birthday? The answer would be differently in different countries. In much countries, people have birthday cakes with candles. The number of candles are the person's age. The birthday person must make a wish and blow the candles. In the UK, people sometimes put a candy in a birthday cake. The child with a candy is lucky. In China, it is getting popular for the Chinese to have cake on their birthday. But many people still eat very long noodles for their birthday. They never cut up the noodles because of the long noodles are a symbol of long life. In some places, Chinese people also ate eggs on their birthday. They are a symbol of life and good luck. All of these birthday food may be different, and the ideas are the same. They take good luck to the birthday person.
有下列八种离子：H＋、NH、Fe3＋、Ba
2＋、Al3＋、SO、HCO、I－，在检验方案设计时初步分析其溶液中最多可含离子（不包括OH－）有 （ ）
