一般情况下，乙烯就在（）部位起作用。乙烯的前体（）可溶于水溶液，因而推测（）可能是乙烯在植物体内远距离运输的形式。
参考答案：合成，ACC，ACC
根据句意及首字母提示，完成下列单词拼写。
1. They are waiting for you at the bus s______.
2. Beijing is in the n________ of China.
3. I often get up at h________ past six in the morning.
4. There are sixty m________ in an hour.
5. It's about two k________ from here to there.
为了便于物料的储放和机械化作业，现代化生产线无一不采用物流容器。
