关于椎骨的描述，不正确的是

A．由椎体、椎弓、突起三部分组成

B．椎体和椎弓围成椎间孔

C．椎间孔内容纳脊髓

D．椎体和椎弓发出7个突起

E．所有椎骨相连，椎孔形成椎管

按要求改写下列句子。

1. He needs some help.( 改为一般疑问句)

   _____ he_____ _____ help?

2. I need a number 30 bus.( 就画线部分提问)

   _____ _____ _____ you need?

3. His friend's father is a teacher.(  就画线部分提问)

    _____ _____ his friend's father _____ ?

4. Take the fifth turning on the left.( 改为否定句)

    _____ _____ the fifth turning on the left.

5. Li Ming's predication is to be an English teacher.( 就画线部分提问)

    _____ _____ Li Ming's predication?