关于补液下列哪些是正确的()A．等渗性缺水病人可补生理盐水或平衡盐 B．低渗性缺水应

单词排队组句子。

1. can, help, I, you (?)

    _____________________________

2. shoes, pair, for, a, of, my, son (. )

    _____________________________

3. about, this, how, pair (?)

    _____________________________

4. they, nice, are (. )

    _____________________________

5. will, take, we, them (. )

    _____________________________

6. how, pants, are, your, much (?)

    _____________________________

7. they, all, are, right (?)

    _____________________________

8. thirty-five, are, yuan, they (. )

    _____________________________

脑增强CT扫描，静脉期出现畸形静脉，表现为“伞状”或“水母状”征象的血管畸形，属于

A．动静脉畸形

B．静脉型血管畸形

C．海绵状血管畸形

D．毛细血管扩张症

E． 烟雾病

_______ Molly is tired, __________ she wants to have a rest.        [ ]

A. Because; so      

B. Why; because  

C. /; so    

D. So; because

使用机械做功时，由于         不可避免，所以总功         有用功，因此，机械的效率总        1．

下列物质间的转化不能一步完成的是[ ]

A. CaCO₃→CaO      

B. CO₂→CO      

C. H₂SO₄→H₂O    

D. Cu→Cu(OH)₂