[解析]
(1)细节理解题。根据第二段中The retiree opened her live﹣streaming account in May 2021 and offered free pinyin courses designed for kindergarten pupils about to attend primary schools. (这位退休人员于2021年5月开设了自己的直播账号,为即将上小学的幼儿园学生提供免费的拼音课程。)可知,她在网上教学的最初目的是教还没上小学的孩子拼音课程,故选C。
(2)推理判断题。根据第四段中According to the seventh national census (人口普查) carried out last year,there are 38 million illiterate adults in China.Yang's live﹣streaming channel offers an easy and private way for those who want to overcome adult illiteracy. (根据去年进行的第七次全国人口普查,中国有3800万成人文盲。杨的直播频道为那些想要克服成人文盲的人提供了一种简单而私密的方式。)可知,杨的直播在不识字的成年人中走红,是因为许多不识字的成年人可以在她的课堂上以一种简单而私密的方式学习汉语,故选D。
(3)推理判断题。根据第二段中She had been a Chinese teacher in an elementary school for 50 years.(她在一所小学当了50年的语文老师)及第四段中Yang's live﹣streaming channel offers an easy and private way for those who want to overcome adult illiteracy. (杨的直播频道为那些想要克服成人文盲的人提供了一种简单而私密的方式)可知,杨献身于教育事业,退休后用直播的方式帮助不识字的成年人学习汉语,由此判断她是一位具有奉献精神和对他人有帮助的人。故选A。