此试题出现在
For a clearer picture of what the student knows, most of teachers use another 1._______kind of examination in addition to objective tests. They use “essay” tests, whichrequire students to write long answers of broad, general questions. One advantage 2._______of the essay test is that it reduces the element of lucky. The students cannot 3._______get high score just by making a lucky guess. Other advantage is that it shows the 4._______examiner more about the student’s ability to put facts together into a meaningfulwhole. It should show what deeply he has thought of the subject. Sometimes, 5._______though, essay tests have disadvantages, either. Some students are able to write 6._______good answers without really knowing much about the subject, as other students 7._______who actually know the material have trouble to express their ideas in essay 8._______form. Besides, on an essay test the student’s score may depend on theexaminer’s feelings at the time of reading the answer. If he is feeling tired orbored, the student may receive a lower score than he should. Another examinerreading the same answer might give it much high mark. From this standpoint 9._______the objective test gives each student a fairer chance. Whether an objective test or an essay test are used, problems arise. When 10._______some objective questions are used along with some essay questions, however, afairly clear picture of the student’s knowledge can usually be obtained.
流行性出血热属于( )
东京樱花
布鲁纳对()的教学设计提出了四项原则。
测量1Ω以下的电阻阻值,应选用()。
用模型内表面的形状来决定器皿外形的工作模,它的工作面内凹,用于形成器物外表面,该工作模为阳模。
结膜黄染是( )。
现代农业类型、分布及特点。
顾客来店往往通过“看、听、嗅、尝、触”五种感觉来进行购买决策,因此,卖场的商品陈列应该达到有效刺激顾客五种感觉的效果。为此,要遵循八大原则。
扫描分辨率的英文缩写是()。
暂无相关推荐~
σ-甲基苯乙烯,甲基丙烯酸甲酯的聚合热比一般单体低。其中,σ-甲基苯乙烯的聚合热更低,如何解释?
以偶氮二异丁腈为引发剂,写出苯乙烯、醋酸乙烯酯和甲基丙烯酸甲酯自由基聚合历程中各基元反应。
氯乙烯、苯乙烯、甲基丙烯酸甲酯聚合时,都存在自动加速现象,三者有何异同?
苯乙烯本体聚合初期()考虑自动加速现象,而甲基丙烯酸甲酯本体聚合初期需要考虑自动加速现象(均填需要/不需要)
苯乙烯和甲基丙烯酸甲酯是常用的共聚单体,它们与某些单体共聚的竞聚率r 1列于下表。根据这些结果排列这些单体的活性次序,并简述影响这些单体活性的原因。
树脂配方为:苯乙烯(S):甲基丙烯酸树脂(MMA):丙烯酸丁酯(BA):甲基丙烯酸羟乙酯(HEMA):丙烯酸=25:25:39:10:1(质量比),计算树脂的T...
苯乙烯聚合时,其自加速现象出现较晚,这是由于苯乙烯单体是聚苯乙烯的()
简述甲基丙烯酸甲酯与苯乙烯的共聚反应。
苯乙烯树脂、酚醛树脂、甲基丙烯酸树脂的骨架是如何制备的?
60℃时苯乙烯(St)的Kp=176L·mol-1·s-1,甲基丙烯酸甲酯(MMA)的Kp=367L·mol-1·s-1,由此表明:自由基的活性是()比()活泼...