经常保持器体洁净，每月用洗涤剂（）一次，以保持器体原有色泽。

A、洗刷护栏

B、洗刷器外

C、局部洗刷

D、彻底洗刷

Directions:

Suppose you are the secretary of the principal of your university. You are expected to write a memo to remind the principal of an important international meeting he has to attend the next day. Imagine some detailed activities the principal has to perform in the meeting.

Write your memo in no less than 100 words. Write it neatly on ANSWER SHEET 2.

Do not sign your own name on the memo; use Li Hua instead.

Do not write the address. (10 points)