根据句意和首字母完成单词，使句子完整正确。

 1.  We often have an English p_____ on weekends.

2.  When do they have a speech c _____ ?

3.  He is our m _____ teacher.  He sings very well.

4. I am twelve.  Today is my t _____ birthday.

5. —Do you know his date of b_____ ?

    —It's March 21st,too.

6. —What's your a _____ ?

    —I'm fifteen years old.

7. —Do they have an Art F_____ ?

    —No, they don't.

8.  The eleventh month of the year is N_____ .

9.  We'll have a school t _____ to Mountain Huang next month.

10.  What's the d_____ today? It's December 16th.

粘膜上皮的完整性发生持续性缺损或破坏，称为（）

A.萎缩

B.坏死

C.溃疡

D.假膜

E.丘疹