根据汉语意思完成下列各句。每空只填一词。

1. 我们该去吃午饭了。

    It's time ___________ us ___________ have lunch.

2. 这座楼房和那座楼房一样高。

    This building is as ___________ ___________ that one.

3. 如果你不早起，上学就会迟到。

    ___________ you don't get up early, you'll ___________ late for school.

4. 约翰跑得如此快，以至于我赶不上他。

    John ran ___________ fast ___________ I couldn't catch up with him.

5. 昨天他直到做完作业才去睡觉。

    He did ___________ go to bed ___________ he finished his homework yesterday.

合并脊髓损伤的脊柱骨折多发生在（）

A.下腰椎

B.胸腰段

C.颈段

D.骶尾段

E.胸段