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问题 单项选择题

给犬内服磺胺类药物时，同时使用NaH-CO3的目的是( )。

A．增加抗菌作用

B．加快药物的吸收

C．加快药物的代谢

D．防止结晶尿的形成

E．防止药物排泄过快

答案

参考答案：D

填空题

根据提示补全句子。

1. How many s ______ are there in a year? There are four.        

2. It's A _______ 7th today. It's my b_______ .                  

3. The dog is _______  (run).                                    

4. The rabbit can _______ (jump) , and the bird can ______ (fly).

5. _______ my bag? It's on the table.                            

6. Listen! The bird is _________( sing).                        

7. -_________ do you go home?                                    

    -I go home at 5:00.                                          

8. Let ______ (I) see.                                          

9. Look _______ the bird.                                        

10. My mother ________ the clothes every morning.
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选择题

如图所示：甲为稀硫酸，乙为氯化铜溶液，电极材料用元素符号表示，则下列说法中正确的是

A．甲装置将电能转变为化学能

B．乙装置中左边的碳棒上有红色金属析出

C．甲中Cu为阳极

D．甲中Fe的质量少了0.56g，乙中右边的碳棒质量增加了0.64g
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