根据句意和首字母提示，写出所缺单词。

1. There is n___________ in the fridge. I have to buy some.

2. Before you enter the teacher's office, you must k__________ on the door first.

3. Bill Gates is a very r_________ man in the world. He has billions of dollars.

4. Mr Gao is eighty years old, but he has some m___________ ideas.

5. Can you tell me the m___________ of the word? Sorry, you should look it up in the dictionary.

6. Yang Liwei and Zhan Tianyou are national h_________.

7. Some people are p___________ flowers in the garden.

深部大血管或脏器组织刺伤，应及时（）。

A.控制出血和纠正休克

B.扩大伤口，看清尖刀刺伤深度

C.已污染的伤口变为清洁伤口

D.以上都对