My name Lingling
A：is
B：am
C：are
某学校楼阶梯教室，第一排有m个座位，后面每一排都比前面一排多4个座位，则第n排座位数是（ ）
—It's important for us to know all the subjects.
—Yeah, group work is my favorite.
已知二次函数y=ax2+bx+c的图象如图，则a、b、c满足（ ）
A. Guess!
B. When is your birthday?
C. Yes. My birthday is on Dec. 2nd. It is my eleventh birthday this year. What about you?
D. Is your birthday in December?
E. My birthday is on Sept. 4th.
____
