阅读短文，选择确答案。
A crow (乌鸦) is sitting in a big tree. She has a big piece of meat in her mouth. An old fox (狐狸) is
looking for his breakfast. He sees the crow and meat. "How can I get that piece of meat?" He thinks.
"Good morning, Mrs. Crow." says the fox, "How are you?" But the crow doesn't say a word.
"You are very beautiful, Mrs. Crow, and you have a beautiful voice, too." says the fox, "Would you please
sing a song for me?"
Mrs. Crow thinks, "Mr. Fox is very nice. I must sing a song to him." So she opens her mouth "Cow!
Cow!" Down drops the meat into the fox's mouth.
1. There's in the crow's mouth.[ ]
A. bread
B. tea
C. a piece of meat
2. The old fox very much.[ ]
A. likes the crow and her babies
B. wants to eat the meat
C. wants the crow to sing for him
3. The crow doesn't say a word to the fox because .[ ]
A. she doesn't like foxes
B. her babies are not well
C. she has a piece of meat in her mouth
4. Who has a nice breakfast?[ ]
A. The crow.
B. The old fox.
C. The baby crows.
近中阻生，下颌升支弥漫性密度增高，其中可见局限性骨质破坏灶。升支外侧皮质无明显破坏，但密质骨外侧有骨质增生。可能的诊断为（）。