引起胆囊收缩素－促胰液素释放作用最强的物质是（）

A.脂肪

B.单糖

C.蛋白分解物

D.盐酸

E.胃泌素

用所给词的适当形式填空。

1. My uncle lives on the __________ (nine) floor.

2. Amy is _________ (interest) in animals now.

3. Panda is a kind of __________ (love) animal. I like it very much.

4. We can work out the problem __________ (easy) in this way.

5. These frogs are __________ (poison).

6. You have to wait for him __________ (help) you.

7. That's the __________ (weigh) of about six elephants.

8. I _________ (buy) a new bike for my daughter yesterday.

9. We _________ (be) there at 9 a.m. tomorrow.

10. You can see the wonderful Chinese _________ (paint) in the museum.