甲醛等蒸气熏蒸法是（） A.干热灭菌 B.防腐剂 C.化学气体灭菌 D.消毒剂消毒

选择适当的词组填空。
根据所提供的语景，从方框中选择正确短语的适当形式完成句子（共10小题；每小题1分，满分10分）（其中有三个多余词）

leave sb alone, be aware of ,cut off, sort out, at no time ,turn around, aim at, be scared to death ，ahead of,  cut down , at a time, in the meantime, meet with,

1. They had their electricity ________________________ be cause they didn’t pay the bill on time.
2. __________________________ will China be a superpower.
3. It’s not good to give the child whatever he wants. _________________________ when he is crying.
4. Hearing her name called, the little girl _______________________ and was surprised to see her aunt standing at the gate waving to her.
5. My homework has been completed ______________________________ time.
6. The visit is ____________________________ improving the relations between the two countries.
7. Seeing a stranger break into her house, she __________________________ of what might happen next.
8. We should at all times _____________________________ our own shortcomings.
9. I think you are the most humorous man that I ______________________________.
10. My first novel was rejected by six publishers. ________________________ I had written a play.