低渗性脱水重度缺钠出现周围循环衰竭，应即先（）
A.输5%高渗盐水200～300ml
B.按每公斤体重缺NaCl0.5g计，快速输生理盐水
C.按血清钠下降值×体重×0.6计，快速输生理盐水
D.快速输入胶体液及晶体液，以补充血容量
E.输高渗葡萄糖及升压药物使血压上升
参考答案：D
解析：重度缺钠出现休克者，应先补充血容量，改善组织灌流后，再纠正血钠过低，以后根据病情再决定输液。故答案应选D。
| 阅读理解。 |
| The aim (目的) of students who came to school is to study. But to study requires (需要) a right way, or you waste either the time or the money. The following are the ways of studying. The best time for reading is morning, because in the morning, the air is fresh and the mind is clear. For that reason, we can get good result. In studying we must have patience (耐心). If we have not known a text well, we must read it again. We should not read the next one till we have learned the first one. When we are studying, we must put our hearts into the book, or we can get nothing from the book while we are reading. We must always ask "whys". If it is not well understood, write it down and ask our teachers or our parents, or friends. In any possible way, we must know it completely and what we've learned can be used well and made better. Though there are many ways for studying, yet the above mentioned (提到的) will be quite enough if we can keep them in heart and do so. |
| 1. The passage tells us ______. |
[ ] |
| A. the importance of reading B. to read in the morning C. to pay attention to the ways of studying D. to have patience in studying |
| 2. The passage has taught us ______ ways for studying. |
[ ] |
| A. three B. four C. five D. many |
| 3. We'd better read in the morning because ______. |
[ ] |
| A. it's hard to remember what we have learned B. the air is fresh and the mind is clear C. it's difficult to get good results D. we have more time |
| 4. If we can't put our hearts into the book when we read, it is ______. |
[ ] |
| A. easy to understand it well B. better to get something from it C. impossible for us to get much from it D. possible to learn much from it |
| 5. In studying we must always ask "whys" in order to ______. |
[ ] |
| A. understand the book well B. write down the questions C. remember the new words D. get some questions to ask our teachers |