检查某药物杂质限量是，称取供试品w克，量取待检杂质的标准溶液体积为V(ml)，浓度为

患者，男性，54岁，突起意识模糊、烦躁不安2小时来院就诊。患者家属代诉于2小时前无明显诱因突起胸骨后持续性闷胀不适，随即出现烦躁不安，阵发性意识模糊，于2005年10月15日19：30分收入急诊科。体查：T37．7℃，P160次/分，R30次／分，BP65／45mmHg，发育正常，神志浅昏迷状，全身巩膜皮肤无黄染，浅淋巴结未扪及，瞳孔3mm，双侧等大、等圆，外耳道无流脓，鼻翼无煽动，口唇无发绀，咽无充血，双侧扁桃体不大。颈软，气管居中，甲状腺无肿大，颈静脉无充盈，胸廓稍呈桶状，语颤正常，叩诊呈过清音，双肺呼吸音粗，未闻及啰音。心前区无隆起，无震颤，心界不大，心率160次／分，律不齐，心音较弱，未闻及杂音。腹平软，肝脾未扪及，肠鸣音正常。脊柱四肢无畸形，双下肢不肿，脑膜刺激征（一），病理征（一）。实验室检查：血常规、尿常规正常。EA示K5．1mmoL／L，Na135mmol／L，CI104．8mmo/L，Ca2．5mmol／L，COCP6．1mmol／L。ECG：1．阵发性室性心动过速，短阵室扑、室颤。2．ST-T改变，提示心肌病变。肌钙蛋白定量（cTnI）1．5ng/mL，心肌酶血全套：除ALT及AST正常高值以外，其余均在正常范围。血气分析正常。6小时后复查，心肌酸正常。入院后给予电击复律后，21：10呼吸频率减慢为2～3次／分，心电图波为室扑、室颤，急行气管插管，呼吸机辅助呼吸，胸外心脏按压，电击除颤，可达龙抗心律失常等，尔后又反复出现室扑、室颤、交界性逸搏心律等，经三次电击除颤于22：35分心肺复苏成功，心律恢复为窦律，生命体征恢复正常，转入心内科治疗10天，病愈出院。追问病史：患者于2000年及2003年曾有过2次类似发作，但仅持续约半小时左右自行缓解，无高血压和糖尿病史，无抗心律失常药物服用史。住院期间进一步检查：1．x-ray：双肺野纹理稍粗，未见主质病变，心膈无异常。2．头颅CT未见异常。3．复律后ECG：见图13～1。多次复查心电图无明显变化。4．心脏彩超：心内结构正常。

鉴别诊断有哪些（请提出支持点及排除点）？

II. Cloze test: 30% (共20小题, 每小题1.5分，满分30分。)

阅读下面短文，掌握其大意，其后从所给的A、B、C、D四个选项中，选出最佳选项。

Several years ago, my parents, my wife, my son and I ate at one of those  16  where the menu was written on a blackboard. After a wonderful dinner, the waiter set the check in the middle of the table. That was when it  17  : my father did not reach for the check.

18  continued. Finally I realized that I should pick up check! After hundreds of restaurant meals with my parents, and after a lifetime of thinking of my father as the one with dollars, it had all  19 . I picked up the check, and my view of myself  20  changed. I was an adult. I was no longer a kid.

Some people mark off their lives in years, and I measure  21  in small events. I did not become a young man at a particular age, like 16, but rather when a kid who  22  in the streets called me “Mister”. These events in my life are called “milestones”.

There have been other milestones. The policemen of my youth always seemed big, even  23 , and of course they were older than I was. Then one day they were suddenly  24 . Then the day came when I  25  that all the football players in the game I was  26  were younger than I was. With that milestone  27  was the dream that  __28__ , maybe I, too, could be a football player. Without ever having reached the hill, I was over it.

I never thought that I would  29  in front of the TV set as my father did. Now it is what I do best. I never thought that I would  30  opera, but now the combination of  31  and orchestra attract me. I never thought that I would prefer to stay home in the evenings, but now I find myself passing up parties. I feel a strong  32  for a religious belief that I never thought I would want, feel  33  my ancestors long gone, and echo my father in  34  with my son. I still lose…

One day I bought a house. One day --- what a day! I became a  35 , and not long after that I picked up the check for my own father. I thought then it was a milestone for me. One day, when I was a little older, I realized it was one for him too, another milestone.

16. A. restaurants       B. laundries            C. stadiums              D. markets

17. A. came          B. happened                   C. finished              D. arrived

18. A. Memory        B. Work               C. Nothing               D. Conversation

19. A. remained       B. collapsed             C. changed                    D. broken

20. A. suddenly       B slowly                C. quickly             D. gradually

21. A. theirs          B. yours                C. mine               D. ours

22. A. stopped        B. smoked               C. fainted             D. wandered

23. A. huge           B. tiny                 C. handsome           D. ugly

24. A. none           B. both                       C. either                      D. neither

25. A. understood      B. imagined                   C. realized             D. recognized

26. A. noticing        B. watching            C. talking with                 D. learning from

27. A. gone           B. missed                     C. appeared            D. changed

28. A. tomorrow       B. someday            C. immediately         D. accidentally

29. A. turn over       B. stand up           C. fall asleep           D. lie down

30. A. hate           B. remember           C. forget              D. appreciate

31. A. voice          B. joy                        C. music              D. art

32. A. sense          B. desire             C. emotion            D. love

33. A. away from     B. sorry for            C. close to             D. fond of

34. A. touch          B. fights                      C. games              D. arguments

35. A. son            B. father                      C. businessman         D. Scientist

站长每周至少一次收集（）、油价、客户、车流量等市场信息.

窗体由多个部分组成，每个部分称为一个【 】，大部分的窗体只有【 】。

一般来说，提高开关电源的频率，则电源（）。

A.同体积时，增大功率；

B.功率减小，体积也减小；

C.功率增大，体积也增大；

D.效率提高，体积增大；