题干
正确抄写下列单词、词组和句子，抄写句子时注意大小写和标点符号
①Mum hello family a thin girl your mother Mr Wang
②Is he a fat teacher? No，he isn't. He's a thin teacher.
答案(点此获取答案解析）
①Mum hello family a thin girl your mother Mr Wang
②Is he a fat teacher? No，he isn't. He's a thin teacher.
，在下列区间中，函数
不存在零点的是（ ）．