短文改错 (共10小题；每小题1分，满分10分)
短文中共有10处语言错误，每句话最多两处错误。错误涉及一个单词的增加、删除或修改。
增加：在此处加一个漏字符号(∧)，并在其下面写出增加的词;
删除：把多余的词用斜线(＼)划掉;
修改：在错的词下划一横线，并在其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（从十一处起）不计分。
Australian bio-geneticist James Dale visited Uganda, a poor African country, in early 2000s. There, he found that 15-30 percent of children under 5 was at risk of going blind because of they did not get enough Vitamin A. Dale also learned that people there love bananas. They eat three to eleven bananas a day. So he came out with the idea to plant bananas containing added nutritions. He believed that these bananas could improve Ugandan’s healthy. Under the help of Bill Gates’ foundation, in 2014, Dale developed the “super banana”. He added a gene to the fruit, thus made it rich of Vitamin A. In June, “super banana” begins human trials in the US. This invention has helped to make the world better.