完成对话。

Jane: Who is the girl on the right?

Bill: That is Sarah. She is very pretty.

Jane: Yes, I think so. Does she work 1_______?

Bill: Yes, she does. She is the 2_______ hard-working student in our class.

Jane: What is she 3_______?

Bill: She is very friendly and polite.

Jane: What 4_______ she like to be in the future?

Bill: She'd like to be a social worker.

Jane: 5_______ too.

关于X线照片影像的形成要素，不包括（）

A.照片密度

B.照片的感度

C.照片的对比度

D.照片的锐利度

E.照片的放大与变形