颅底骨折的治疗原则。

某饮料的配料有如下说明：配料：纯净水、白砂糖、鲜橙浓缩汁、柠檬酸、维生素C、食用香精 鲜橙原汁含量≥10％ 净含量：500mL

（1）该配料中能为人体的生命活动提供能量的物质是什么？除配料中所涉及的营养物质外，人体必需的营养物质还有哪些？（列出2种即可）                                                                        

（2）推测该饮料可能的酸碱性及其依据，并设计简单的实验进行检测。（答出实验所需要的试剂或用品即可）                                                                                     

（3）维生素C片保存时，应注意避热、避光、密封，据此可推测维生素C的具有什么化学性质？

短文填词。

     I have four good (1)f           . They're Jennifer, Victor, Cindy and Leila. We are in the (2)s          

 (相同的) class. So we're (3)c            (同班同学), too. Jennifer swims very well, she wants to join

the (4)s            club. Then she can swim on (5)S            or Sundays. Victor wants to join the art club

because he is good at (6)p           . Cindy is a pop music fan. She can sing a lot of (7)s           . So she

wants to join the (8)s            club. Leila wants to join the music club because she (9)p            the violin

very well. And she wants to be a (10)m            when she grows up (长大). I like them.

女性，36岁，发现颈前肿物1月，近1周肿物增长较快，无声嘶。查体：右叶甲状腺中部可及3cm×3cm肿物，光滑，随吞咽上下活动，中等硬。周围未触及肿大淋巴结。

术后13小时，患者突然出现呼吸困难，此时最恰当的处理是（）

A.静点止血药

B.血肿穿刺抽血

C.局部加压包扎

D.拆除缝线止血

E.请喉科行气管切开

防治香蕉枯萎病的措施是（）？

A、加强检疫

B、推广种植无病组培苗

C、定期检查蕉园，发现零星病株应及时清除销毁，并撒施石灰或石灰氮处理土嚷

D、防止耕作机械和劳动工具的交叉传播

波浪的搬运作用