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问题 单项选择题

男性，肝硬化腹水患者经药物治疗后，血钾为2.4mmol/L，尿钾40mmol/L，此患者低钾原因最大可能是（）。

A.低盐饮食

B.食欲不振

C.放腹水

D.呕吐

E.利尿治疗

答案

参考答案：E

改错题

单句改错。下面各句中有错误，请指出并改正。( 注意：只有一处错误 )

1. When to hold a meeting to settle the problem haven't been decided.                               

2. He promosied me that he will never lie to me again.                               

3. Tom never gave in any difficulties.                            

4. He worked here since graduation.                            

5. I am very sad because I have no partner to speak English.                                

6. They made up their mind to work hard.                            

7. It is a great fun to go camping with friends.

8. I agree with what you said but I don't agree with anything.                                

9. The policeman couldn't see which direction the car went.                                

10. After he failed once, he tried the second time.                              
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选择题

鸟类一般具有的下列特征中，与飞行生活无密切关系的是（　　）

A．有的骨薄而中空

B．骨骼有愈合现象

C．直肠很短、无膀胱

D．喙很坚硬
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