阅读短文，根据短文内容，从所给的六个选项中选出可以填入空白处的最佳选项，使短文意思完整、连贯。（有两项为多余选项）
The book that can't wait
One problem a lot of people have with books is that they buy them and then never read them. 1 It printed a book in disappearing ink: the text of the book disappears two months after the special package（盒）of the book is opened. It encourages buyers to read it before it goes away. People call this “he book that can't wait”.
2 The publisher（出版社）sold out all the first edition at a bookstore in one day, and received“thousands of requests（请求）”for more copies of the book. It also got a lot of media coverage（媒体报道）. As a result,the publisher is planning to publish other works in disappearing ink now.
3 But here, we have some suggestions:
First,the book should start disappearing after the reader opens the book for the first time. If the books become very popular in the future, readers will need to read them one at a time. They don't want their books to disappear before they read the frist page.
Second, the disappeared book should find a good use. _4It would be a more environmentally friendly way to do this.
