下列叙述正确的是()

B．幼女卵巢表面凹凸不平

C．被子宫阔韧带的前层所包绕

D．分内、外两面，上、下两端，前、后两缘

E．其内侧面有卵巢门

B.测定Ca²⁺、Mg²⁺时，可用三乙醇胺掩蔽少量Fe³⁺和Al³⁺

C.使用掩剂时，要控制一定的酸度条件

D.Ca²⁺、Mg²⁺共存时，可用NaOH掩蔽Mg²⁺

A. Ⅰ、Ⅱ、Ⅲ、Ⅳ

B. Ⅱ、Ⅲ、Ⅳ

C. Ⅰ、Ⅱ、Ⅲ

D. Ⅰ、Ⅱ、Ⅳ

B.同一个人可能承担多个角色，同一角色只能由一个人来承担

C.同一个人只能承担一个角色，同一角色可能由多个人来承担

D.同一个人只能承担一个角色，同一角色只能由一个人来承担

Research suggests they may study more broadly for the unexpected rather than search for answers.

[A] I have always been a poor test-taker. So it may seem rather strange that I have returned to college to finish the degree I left undone some four decades ago. I am making my way through Columbia University, surrounded by students who quickly supply the verbal answer while I am still processing the question.

[B] Since there is no way for me to avoid exams, I am currently questioning what kind are the most taxing and ultimately beneficial. I have already sweated through numerous in-class midterms and finals, and now I have a professor who issues take-home ones. I was excited when I learned this, figuring I had a full week to do the research, read the texts, and write it all up. In fact, I was still rewriting my midterm the morning it was due. To say I had lost the thread is putting it mildly.

[C] As I was suffering through my week of anxiety, overthinking the material and guessing my grasp of it, I did some of my own polling among students and professors. David Eisenbach, who teaches a popular class on U.S. presidents at Columbia, prefers the in-class variety. He believes students ultimately learn more and encourages them to form. study groups. That way they socialize over history outside the class, which wouldnt happen without the pressure of an in-class exam, he explained, Furthermore, in-class exams force students to learn how to perform. under pressure, and essential work skill.

[D] He also says there is less chance of cheating with the in-class variety. In 2012, 125 students at Harvard were caught up in a scandal when it was discovered they had cheated on a take-home exam for a class entitled Introduction to Congress. Some colleges have what they call an honor code, though if you are smart enough to get into these schools, you are either smart enough to get around any codes or hopefully, too ethical to consider doing so. As I sat blocked and clueless for two solid days, I momentarily wondered if I couldnt just call an expert on the subject matter which I was tackling, or someone who took the class previously, to get me going.

[E] Following the Harvard scandal, Mary Miller, the former dean of students at Yale, made an impassioned appeal to her schools professors to refrain from take-hone exams. Students risk health and well-being, as well as performance in other end-of-term work, when faculty offers take-home exams without clear, time-limited boundaries, she told me. Research now shows that regular quizzes, short essays, and other assignments over the course of a term better enhance learning and retention.

[F] Most college professors agree the kind of exam they choose largely depends on the subject. A quantitative-based one, for example, is unlikely to be sent home, where one could ask their older brothers and sisters to help. Vocational-type classes, such as computer science or journalism, on the other hand, are often more research-oriented and lend themselves to take-home testing. Chris Koch, who teaches History of Broadcast Journalism at Montgomery Community College in Rockville, Maryland, points out that reporting is about investigation rather than the memorization of minute details. In my field, its not what you knowits what you know how to find out, says Koch. There is way too much information, and more coming all the time, for anyone to remember. I want my students to search out the answers to questions by using all the resources available to them.

[G] Students test-form. preferences vary, too, often depending on the subject and course difficulty. I prefer take-home essays because it is then really about the writing, so you have time to edit and do more research, says Elizabeth Dresser, a junior at Barnard. Then there is the stress factor. Francesca Haass, a senior at Middlebury, says, I find the in-class ones are more stressful in the short term, but there is immediate relief as you swallow information like mad, and then you get to forget it all. Take-homes require thoughtful engagement which can lead to longer term stress as there is never a moment when the time is up. Meanwhile, Olivia Rubin, a sophomore at Emory, says she hardly even considers take-homes true exams. If you understand the material and have the ability to articulate (说出) your thoughts, they should be a breeze.”

[H] How students ultimately handle stress may depend on their personal test-taking abilities. There are people who always wait until the last minute, and make it much harder than it needs to be. And then there those who, not knowing what questions are coming at them, and having no resources to refer to, can freeze. And then there are we rare folks who fit both those descriptions.

[I] Yes, my advanced age must factor into the equation(等式), in part because of my inability to access the information as quickly. As another returning student at Columbia, Kate Marber, told me, “We are learning not only all this information, but essentially how to learn again. Our fellow students have just come out of high school. A lot has changed since we were last in school.

[J] If nothing else, the situation has given my college son and me something to share, When I asked his opinion on this matter, I like in-class exams because the time is already reserved, as opposed to using my free time at home to work on a test, he responded. It seems to me that a compromise would be receiving the exam questions a day or two in advance, and then doing the actual test in class the ticking clock overhead.

[K] Better yet, how about what one Hunter College professor reportedly did recently for her final exam: She encouraged the class not to stress or even study, promising that, It is going to be a piece of cake. When the students came in, sharpened pencils in hand, there was not a blue book in sight. Rather, they saw a large chocolate cake and they each were given a slice.

36. Elderly students find it hard to keep up with the rapid changes in education.

37. Some believe take-home exams may affect students' performance in other courses.

38. Certain professors believe in-class exams are ultimately more helpful to students.

39. In-class exams are believed to discourage cheating in exams.

40. The author was happy to learn she could do some exams at home.

41. Students who put off their work until the last moment often find the exams more difficult than they actually are.

42. Different students may prefer different types of exams.

43. Most professors agree whether to give an in-class or a take-home exam depends on type of course being taught.

44. The author dropped out of college some forty years ago.

45. Some students think take-home exams will eat up their free time.

A.先输5%～10%葡萄糖液后输等渗盐水以纠正混合性缺水

B.先用等渗盐水以纠正细胞外液丢失，再用5%～10%葡萄糖液纠正细胞内液丢失

C.先用低分子右旋糖酐再补等渗盐水

D.补液的同时使用碱剂和钾，以纠正缺水，代谢性酸中毒

E.必要时用碱剂以纠正代谢性酸中毒，有尿之后再考虑补钾

此题为判断题(对，错)。

此题为判断题(对，错)。