Articles Wanted
School Life
Articles should be typewritten (打印的), using only one side of the page.
Your name, year of birth, school name (and English teacher), home address and e-mail address must be included.
For photos, write the information on the back of each envelope: PLEASE DON'T Fold.
Please keep copies of your text, pictures or photos for yourself. 
The sentence MUST BE WRITTEN with your name on each work, "I promise the above work is completely original (原创的)."
If your article is chosen, you will receive a copy of School Life and a special gift.
SEND IT ALL SUMMER!
For name information, please contact (联系) us!
Tel：(02) 92136116    (02) 92674363
E-mail：school life@acpmagazines.com.au
Mail：School Life. Box 5252, Sydney, NSW 200

函数f（x）=ax²+bx+c（a≠0），f（x）的导函数是f′（x），集合A={x|f（x）＞0}，B={x|f′（x）＞0}，若B⊆A，则（　　）

三三____

关于香港和澳门的叙述，正确的是