根据对话内容，补出所缺单词。

A: Excuse______(1), is______(2) your pencil?

B: Yes, it is.

A: ______(3) you are.

B: ______(4) is your pencil case?

A: It's ______(5) the desk. It's ______(6) to ______(7) dictionary. ______(8) new.

B: Oh, ______(9) very nice.

A: Can I ______(10) a look at your pencil case?

B: Yes, of course.

A: Thanks.

1.______ 2.______ 3.______ 4.______ 5.______

6.______ 7.______ 8.______ 9.______ 10.______

结肠双对比X线造影检查可显示的最小解剖单位是（）

A.结肠袋

B.结肠带

C.黏膜皱襞

D.结肠无名沟

E.以上都不是