尿钠排泄分数正常为1，若>1说明
A．为肾前型氮质血症
B．肾小球肾炎
C．急性肾小管坏死或尿路梗阻
D．间质性。肾炎
参考答案：C
按要求写单词。
1. activity (复数) __________________
2. sheep (单数) __________________
3. down (反义词) __________________
4. calf (复数) __________________
5. let's (原形) __________________
6. children (单数) __________________
7. play (三单) __________________
8. joey (复数) __________________
9. baby cats (同义词) __________________
10. that (复数) __________________
—__________ do you go to Dalian on business?
—Never.
A. How long B. How often C What time D. When
