骶丛由第4腰神经前支余部和第5腰神经前支合成的腰骶干，及全部的骶神经和尾神经前支组成，是全身最大的脊神经丛。
参考答案：对
根据汉语提示写单词。
1. This is the tallest ______(塔) I have ever seen.
2. I've got three dalls' holiday,______ (包括) NewYear's Day.
3. The bird couldn't fly______ (更远) and stopped to rest.
4.These bananas weigh about five______ (千克).
5. Li Ming spent the______ (完整的) day in watching TV.
竞买机动车应做哪些准备工作
