小李同学在一下装置的①号瓶中分别加入等量的活酵母菌，以探究其呼吸方式。在相同时间内，②号瓶中产生沉淀最多的是

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）每句不超过两个错误；

2）每处错误及其修改均只限一词；

3）只允许修改10处，多者（从第11处起）不计分。

    Wechat is becoming increasing popular. The other day, when I was walking by a food shop, I notice an old woman buying some food. She didn't pay in cash. Instead of, she paid with WeChat. WeChat payment is becoming more and more popular. Why do people like to use WeChat payment? The main reason is because it is simple and convenience. What we need to do are to take out the cellphone, scan the QR code and pay the goods we buy. We don't have to carry wallets with me any longer. WeChat payment, that has changed the way we shop, is created by Chinese. We each should be proud of be a Chinese. It shows to the world that Chinese people are creative.

资料一：2015年10月，中国女药学家屠呦呦因致力于青蒿素对疟疾的重大贡献获诺贝尔奖。疟疾是由疟原虫（单细胞生物）所致的急性传染病，该病通过按蚊叮咬传播。她发现的青蒿素可以有效降低疟疾患者的死亡率。

资料二：自安哥拉黄热病疫情爆发以来，包括我国在内的多个国家已经发现输入性病例。黄热病是由黄热病毒所致的急性传染病，通过伊蚊叮咬传播。人对黄热病毒普遍易感，接种疫苗可获得持久免疫力。