单项选择题
Questions 21 and 22 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions. Now, listen to the news.
Why were some children offered only fruit and milk for lunch（）
A．The school stopped providing school lunch. B．Their parents failed to pay for school lunch. C．Some parents preferred fruit and milk for lunch. D．These children chose to have something different.
单项选择题 What is the conversation mainly about（）
单项选择题 According to a number of students, （）is the main factor for early-age smoking.
