①都在思考世界本原是什么的问题

②都正确地揭示了物质与意识的关系

③都属于古代朴素的唯物主义观点

④都在回答一切哲学不能回避的问题

根据文章的意思和所给空格填入所缺单词。
    Do you know apples? Have you ever e____apples? What funny questions! You know I'm t____about the apple products(产品) from the USA. Now, there are m____of apple fans in China. Many of t____are teenagers. The price of apple products is very h____but people think they are b____modern and fashionable, as if they are from the future. It is said that there is a student who would like to s____his kidney（肾）to buy an i-phone. In fact, it is not n____for students to own the expensive mobile phones because even you can use the most common one to play games, chat on QQ with friends o____search on the Internet. The biggest use of a mobile phone is making c____and in most schools mobile phones are forbidden(禁止).

关于经线的叙述，正确的有（　　）