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问题 单项选择题

维生素B1

A．具碱性、水溶性
B．具酸性、水溶性、旋光性
C．具还原性、脂溶性
D．水解后具还原性、脂溶性
E．具醌式结构、脂溶性
下列药物的理化性质分别是

答案

参考答案：A

句型转换

句型转换。

1. They make these watches in Shanghai. (改为被动语态)

    These watches       _____                  Shanghai.

2. This tree can be moved to another place.(改为一般疑问句)

           _____this tree ________to another place?

3. These rooms were decorated by a few hoys yesterday  morning.(用tomorrow改写句子)

    These rooms____  __ _                by a few boys______     .

4. These newspapers you have read should be throw way.(改为否定句)

    These newspapers you have read____                          away.

5. The robot was improved by a young man last month.(改为主动语态)

    A young man   _______      _____        _____     last month.
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多项选择题

休克早期的病人，其变化为（）

A.反射性心血管运动中枢兴奋

B.引起微循环灌多于流

C.末梢小血管和微血管持续痉挛

D.组织细胞缺血，缺氧

E.肾上腺皮质系统兴奋
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