为防止火工品失控，丢失、爆炸等事故，在火工品发放和接收以及组装完毕后应当做什么工作？
参考答案：应当向公司危险品监控办公室汇报火工品的使用情况。
急性病毒性肝炎时AST/ALT比值（）
A.小于1
B.大于1
C.等于1
D.大于3
E.大于2
仿照例句，将下列句子合并为含定语从句的复合句。
Example: I like these singers. They write their own music.
→ I like these singers who write their own music.
1. I like Maria. She is clever and friendly.
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2. Here is the key. You're looking for it.
3. This is the best movie. I have seen it.
4. Do you know the girl? She is making a telephone call.
5. Let's go to the new sports center. It has just opened in our town.
