治疗寒凝气滞，小腹胀痛伴肾阳不足，小便频数者，应首选（）A.香_爱下问搜题

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问题单项选择题

治疗寒凝气滞，小腹胀痛伴肾阳不足，小便频数者，应首选（）

A.香附

B.小茴香

C.乌药

D.青皮

E.木香

答案

参考答案：C

问答题

物质在水溶液中的行为是中学化学的重要内容．已知下列物质的电离常数值（25℃）：

HClO：Ka=3×10^-8，HCN：K_a=4.9×10^-10

H₂CO₃：Ka₁=4.3×10^-7，K_a2=5.6×10^-11

（1）84消毒液中通入少量的CO₂，该反应的化学方程式为______．

（2）25℃时，等物质的量浓度的①NaClO溶液；②Na₂CO₃溶液；③NaCN溶液，三溶液的pH由大到小的顺序为______（填序号）．

（3）等物质的量NaClO和NaHCO₃的混合液中，各微粒浓度的关系为：[Na⁺]=______+[H₂CO₃]

（4）实验室可用如图所示装置制备84消毒液，则a为______极，制备过程中总的离子反应方程式为______．

（5）25℃时x mol•L^-1CH₃COOH溶液与0.01mol•L^-1 NaOH溶液等体积混合，溶液显中性，则[CH₃COO^-]______[Na⁺]（选填“＞”、“＜”或“=”），用含x的代数式表示CH₃COOH的电离平衡常数K_a=______．

完形填空

阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
I have always lived in Canada, and traveled from Hamilton to Ottawa for work months ago. Arriving at the airport     , I had to stay in the      hall to spend my time. Without much else to do, I decided to go to the     store. As I walked around the store, 1      two American women having a     on a bench. It looked as if they had been at the airport for hours, and I felt anxious to do something to help them       their wait.
I          the store for a few moments, and went to buy a medium-sized toy which looked like a cartoon          . I asked the owner of the shop for a note and a         and wrote, "When you get up ,I hope this gift will make you smile. Have a good trip ! "
I walked      towards the two women and      the toy and the note next to them. Not wanting to wake them, I tried my best to make no    , but in my attempt to flee the scene. one of them woke up and caught me in the act. At first she looked    . Maybe she thought I was a     ! But when she looked at the soft toy and the note, she     up, as if she became a happy girl. " Is this for me? " she asked. I gave her a      smile and nodded.
She was         about the thing ! We talked more like old friends instead of
     . I came to realize that we should care for each other and love each other although
we were from       places.

B．went through

C．looked around