根据下列句子的意思及所给单词的首字母或汉语提示，写出所缺单词，每空限填一词。

1. Help y_________ to some cakes, children.

2. In most western countries, people don't eat with c_________, they use knives and forks.

3. I'm _________ (渴的), I want to buy a bottle of water.

4. Mid-autumn Festival is one of the Chinese t_________ festivals.

5. She's _________ (分) the watermelon into twenty pieces and given them to each student.

不具有支持作用的卡环是（）

A.间隙卡

B.双臂卡环

C.三臂卡环

D.联合卡环

E.对半卡环