根据首字母及句意补全单词。

1. The giraffe has a long n____.

2. I saw a boy l____ on the ground and crying.

3. Open your m____ and say "ah".

4. He has a bad cold and he has a high f____.

5. My English is poor. Can you give me some a____?

闪点是评定液体火灾危险性的主要依据。液体的闪点（），火灾危险性（）。

A.越低，越小

B.越低，越大

C.越高，越小

D.越高，越大