My school trip is _______ May.
A：in
B：on
C：at
D：of
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.
____
下列各句中，划线的成语使用恰当的一项是（ ）
李文在一次射击中，命中的子弹100发，没有命中的25发，命中率是（ ）
