特发性肺间质纤维化的胸部X线特点是（）

A.双肺弥漫分布的毛玻璃影

B.双肺弥漫性结节性浸润

C.双肺大片状影，呈"地图样改变"

D.肺段或肺叶实变影，可形成空洞，同时病灶变化快

E.双肺门或中、一肺野内带散在小结节影、网状纹理增粗或呈磨玻璃影

根据句子意思，用括号内所给词的正确形式填空。

1. David Beckham is a famous football _______ （play）.

2. Mr. Wu teaches _______ （we）English. He is a very good teacher.

3. Linda often helps her friends. She is a _______ （help）girl.

4. Look，the baby has only three _______ （tooth）.How lovely ！

5. Lily and I _______ （be）in the same class. We are classmates.