Directions: Write a reply to this business letter.

Office Supplies Company ABC Engineering Company,

222 Nathan Road 77 An Nei Jie, Wuhan

Kowloon, Hong Kong 17th January

Dear Sir/Madam,

I saw your advertisement in China Daily for your new fax machines. Would you please send me more information and a price list. I would also appreciate a visit to one of from sales people in the near future to discuss our requirements for business machines. Thank you.

Yours sincerely,

Li Wei

You should write about 100 words on ANSWER SHEET 2. Do not sign your own name at the end of the letter. Use "Li Ming" instead.

酶反应中决定酶专一性的部分是（）

A.辅助因子

B.酶蛋白

C.金属离子

D.底物

E.别构剂