[解析]
(1)B.推理判断题。根据第一段中的Students who spend time teaching what they've learned show better understanding and ability to remember knowledge than students who simply spend the same time re—studying.(花时间教授所学知识的学生比只花同样时间重新学习的学生表现出更好的理解和记忆知识的能力。)和第二段中的Researchers did a study to test their idea that teaching improves the teacher's learning because it forces the teacher to find back what they've learned.(研究人员进行了一项研究,以验证他们的观点,即教学提高了教师的学习,因为它迫使教师找回他们所学的东西。)可知,本篇文章主要讲述在教学中学习更能提高学生的学习效果。由此可知,第一段提出问题的原因在于进一步引出本篇文章的主题。故选B。
(2)B.段落大意题。根据第二段中的They asked 124 students to spend ten minutes studying a text with numbers on a topic which is completely new to them.(他们让124名学生花十分钟学习一篇关于一个对他们来说完全陌生的主题的带有数字的课文。)和After studying the text,the students were divided into four groups.(在学习课文后,学生们被分为四组。)以及A week later,all the students took a surprise test of their knowledge and understanding of the text.(一周后,所有的学生都对他们的知识和对课文的理解进行了一次意外的测试。)可知,第二段主要绍实验的过程,也就是这个实验是怎么做的。故选B。
(3)C.推理判断题。根据最后一段The new findings have a practical suggestion for how the learning—by—teaching method is used in education.In order to make sure that students learn and remember an educational material,they should internalize(内化) the material before presenting it to others,rather than depend on notes during the presentation process.(这些新发现为教学中学习在教育中的应用提供了切实可行的建议。为了确保学生学习和记忆教育材料,他们应该在向他人展示之前将材料内化,而不是在展示过程中依赖笔记。)可知,作者认为在教学中学习有利于教育实践,学生应该在教学中学习。由此可推知,在学校教育中,应该强调的是在教学中学习。故选C。
(4)B.文章出处题。文章主要讲述了一项重要的研究,研究发现在学习中,学生在教学中学习更有助于提高学生的学习效率。所以此文章最有可能出自报纸。结合选项A.A history textbook.历史教科书;B.A newspaper.报纸;C.A guideline.指导方针;D.A detective novel.侦探小说。故选B。