书面表达
在我们的日常生活中，只要肯开动脑筋，我们也能成为一个小小的发明家。请你运用你的想像设计一项发明，并说明它的用途。不少于70词。
下面的问题可供参考和选用：
（1）What is it used for?
（2）What is it made of?
（3）What does it look like?
（4）How does it work?
Do you like cleaning up your room? If you don't, this must be your favorite-a special kind of
machine. Maybe you won't believe that I made the machine. It is used for cleaning your desks. It
can put up the books onto the bookshelves in the order you set on. It looks like a ballet dancer when
it works. I think this would be helpful for the people who are too busy or too tired to clean their desks.
（答案不唯一）