下列关于人体血糖平衡调节的叙述中，不正确的是[ ] A．血糖平衡的调节是在神经、

Look at the picture of an office worker’s desk. Notice how the baskets on the secretary’s desk have labels(标签). Labels help office workers know what something is for and where something may be.
Read the labels. What do you think they mean?
In each basket are job tasks that a secretary needs to do or has completed. The labels tell her what must be done with the jobs in the drawer.
For example, one drawer has this label: To Be Done ASAP( ASAP means As Soon As Possible.) Let’s say someone needs a copy of a letter and puts it in that basket.
What would you think the secretary would do?
The secretary would copy the letter as soon as she could. Then she would give it back to the person right away. That is the main point of the label: the tasks in this drawer need to be done right away.
The other labels also have a main point.
IN:       The tasks need to be done.
OUT:     The tasks are finished and can go back to the persons who sent the tasks.
MAIL:    The tasks must go to the post office.
TO BE FILED: The tasks must be put in the file drawers.
In which basket would you put the following things? Write the label of the basket.

A. a contract(合同) that must be copied right away B. reports that must be filed away C. a letter that needs be signed(签字) D. an iphone 5 that should be fixed at once E. a meeting schedule that has been typed F. a user’s guide that must be sent to a buyer

正确的顺序是：