题目

某化学小组为验证稀硫酸的性质，并探究反应后废液的成分，进行了如下实验。 I：验证稀硫酸的某些性质 （1）按图所示进行实验，其中试管_____（选填序号）中无明显现象，小组同学讨论认为该试管中的两种物质间没有发生复分解反应，他们的理由是_____。 （2）为验证稀硫酸和氢氧化钠溶液是否发生反应，小明和小红分别向盛有氢氧化钠溶液的试管中，先加稀硫酸，再向混合后的溶液中滴加几滴酚酞溶液，结果小明观察到溶液为红色。小红观察到When Suzanne Kail, an English teacher at a public high school in Magnolia, Ohio, was told that she would be required to teach her students Latin and Greek word roots, she rolled her eyes. Kail believed in a progressive approach to education, in which active participation in meaningful learning was the most important. In an account of her experience in the English Journal, she wrote, “asking students to do rote memorization (机械记忆) was the opposite of what I believed in most.” Still, her department head insisted on it. She was sure her students wouldn’t like it, either. Kail was surprised — as was anyone who took a look at the recent studies supporting the effectiveness of “old school” methods like memorizing math facts, reading aloud, practicing handwriting and so on. While the education world is all excited about so-called 21st-century skills like cooperation, problem solving and critical thinking, this research suggests that we might do well to add a strong dose (一剂) of the 19th century to our children’s schooling. As soon as Kail began teaching her students the Greek and Latin origins of many English terms — that the root “sta” means “put in place or stand”, for example, and that “cess” means “to move or withdraw”— they eagerly began recognizing familiar words including the roots, like “statue” and “recess”. Kail’s students started using these terms in their writing, and many of them told her that their study of word roots helped them answer questions on the SAT and on Ohio’s state graduation exam. For her part, Kail reported that she no longer saw rote memorization as “evil”. That’s also true of another old-fashioned method drilling math facts, like the multiplication table (乘法表). Although many progressive educators speak ill of what they call “drill and kill” (kill students’ love for learning, that is), rapid mental retrieval (检索) of basic facts is required for doing more complex and more interesting kinds of math. The only way to achieve this, so far as anyone has been able to determine, is to practice and practice. Indeed, many experts have observed the wide gap between the math scores of American and Chinese students on international tests. Asian schools focus heavily on math facts. Failure to do so can effectively close off the higher realms (范围) of mathematics — a study found that most errors made by students working on complex math problems were due to a lack of automaticity (自动性) in basic math facts. 60. What did Suzanne Kail think was the most important in learning at first?       A. Memorizing math facts.                                B. Problem solving ability.        C. Students’ active participation                        D Studying word roots... 61. How does the study of word roots benefit students?        A. It helps students build a large vocabulary more easily.        B. It provides students with motivation for rote memorization.        C. It helps students break up their conventional thinking.        D. It gives students more knowledge about Greek and Latin. 62. Why is there a gap between the math scores of American and Chinese students?        A. Because American students’ love for learning has been killed.        B. Because American students are not very familiar with basic math facts.        C. Because Chinese students have a higher math level than American students.        D. Because Chinese students are becoming more creative than American students. 63. The author might NOT approve of             .        A. using rote memorization                B. abandoning 21st-century methods        C. practicing handwriting                     D. remembering basic math facts repeatedly