根据中文、音标或首字母提示及句意写出句子中所缺单词。

1. I have a good ___________(记忆力), I can remember things in a short time.

2. Jim is unkind, he has few friends, so he often plays ___________ (独自).

3. We eat about 27,000 kilos of food ___________ (在---期间) our lives.

4. The doctor tried to s___________ the baby's life.

5. Don't ___________ /p?: (r)/ the juice over your clothes.

6. He is ill, so he feels very ___________ /wi: k/.

按物流信息的来源分类可以把物流信息分为物流系统内信息和物流系统外信息。