确定培训需求需要经历几个过程分别是什么？

请将下列句子改为否定句，每空一词（含缩写）。

1. Li Ming receives an e-mail.

    Li Ming                         an e-mail.

2. My English will become very good.

    My English                          very good.

3. He can come to our school.

    He                          to our school.

4. They had a good time in Qingdao.

    They                         a good time in Qingdao.

5. I wanted to go to the big store to buy something.

    I                          to go to the big store to buy anything.

6. Sit here, please. 

                              here, please.

7. My mother is washing the clothes.

    My mother                           the clothes.

8. There are some desks in the classroom. 

     There                          desks in the classroom.

25岁孕妇，孕37周，行产前常规超声检查，既往体健，超声发现如下图所示，根据图像最有可能诊断为()

A．脊柱裂

B．脐带绕颈

C．脊膜膨出

D．无脑儿

E．以上都不是

在我国，人民是国家权力的直接行使者。[ ]

为了防范风险，POS终端签到交易设置成（），以便操作员交易时对其身份进行验证。

A、自动签到

B、人工签到

C、脱机签到

D、以上三种

下列贸易理论中，用于解释发达国家之间贸易量增加的理论是( )。

A．赫克歇尔一俄林理论
B．绝对优势理论
C．比较优势理论
D．规模经济理论