在DWDM系统中，能对某些再生段开销字节进行监视的OTU是(    )。

下列关于估值技术变更的表述中，不正确的是（   ）。

Passage1

Today's adults grew up in schools designed to sort us into the various segments of our social and economic system. The amount of time available to learn was fixed: one year per grade. The amount learned by the end of that time was free to vary: some of us learned a great deal；some，very little. As we advanced through the grades，those who had learned a great deal in previous grades continued to build on those foundations. Those who had failed to master the early prerequisites within the allotted time failed to learn that which followed. After 12 or 13 years of cumulative treatment of this kind，we were，in effect，spread along an achievement continuum that was ultimately reflected in each student's rank in class upon graduation.

From the very earliest grades, some students learned a great deal very quickly and consistently scored high on assessments. The emotional effect of this was to help them to see themselves as capable learners, and so these students became increasingly confident in school. That confidence gave them the inner emotional strength to take the risk of striving for more success because they believed that success was within their reach. Driven forward by this optimism, these students continued to try hard, and that effort continued to result in success for them. They became the academic and emotional winners. Notice that the trigger for their emotional strength and their learning success was their perception of their success on formal and informal assessments.

But there were other students who didn't fare so well. They scored very low on tests, beginning in the earliest grades. The emotional effect was to cause them to question their own capabilities as learners. They began to lose confidence, which, in turn, deprived them of the emotional reserves needed to continue to take risks. As their motivation warned, of course, their performance plummeted. These students embarked on what they believed to be an irreversible slide toward inevitable failure and lost hope. Once again, the emotional trigger for their decision not to try was their perception of their performance on assessments.

Consider the reality-indeed, the paradox-of the schools in which we were reared. If some students worked hard and learned a lot, that was a positive result, and they would finish high in the rank order. But if some students gave up in hopeless failure, that was an acceptable result, too, because they would occupy places very low in the rank order. Their achievement results fed into the implicit mission of schools: the greater the spread of achievement among students, the more it reinforced the rank order. This is why, if some students gave up and stopped trying (even dropped out of school), that was regarded as the student's problem, not the teacher's or the school's.

Once again, please notice who is using test results to decide whether to strive for excellence or give up in hopelessness. The"data-based decision makers" in this process are students themselves.

Students are deciding whether success is within or beyond reach, whether the learning is worth the required effort, and so whether to try or not. The critical emotions underpinning the decision making process include anxiety, fear of failure, uncertainty, and unwillingness to take risks-all triggered by students' perceptions of their own capabilities as reflected in assessment results.

Some students responded to the demands of such environments by working hard and learning a great deal. Others controlled their anxiety by giving up and not caring. The result for them is exactly the opposite of the one society wants. Instead of leaving no child behind, these practices, in effect, drove down the achievement of at least as many students as they successfully elevated. And the evidence suggests that the downside victims are more frequently members of particular socioeconomic and ethnic minorities.

What is the author's attitude towards the old mission of assessment?

蒲黄的功效是(   )

可用于治疗神经源性尿崩症的药物是

医疗机构对于购进药品应当逐批验收，并建立真实、完整的药品验收记录，验收记录必须按规定保存（     ）

中间细胞见于（   ）

公益慈善信托按照服务内容和特点，分为慈善信托和其他公益信托共2个业务品种。（  ）

急性根尖周脓肿时，最佳的引流通道是（  ）

2006年12月31日，某企业建造的办公楼达到预定可使用状态，建成后准备自用，建造成本为2 500万元，预计使用年限25年，预计净残值为零。2015年12月31日，董事会决议将该办公楼以经营租赁方式出租，采用成本法进行后续计量。2016年12月31日，该办公楼的可收回金额为1 450万元，公允价值为1 510万元。则2016年12月31日，该办公楼的账面价值为(  )万元。

能泻下软坚，善治燥屎坚结难下的药物是