调查法_爱下问搜题

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问题名词解释

调查法

答案

参考答案：

教师围绕某一教育现象，采用问卷、谈话、座谈等多种形式收集资料，并对所获得的资料进行定量、定性分析，指出所存在的问题，提出教育建议的一种方法。

问答题

如图所示，直线MN上方存在垂直纸面向里、磁感应强度大小为B的匀强磁场，现有一质量为m、带电荷量为+q的粒子在纸面内以某一速度从A点射入，其方向与MN成30°角，A点到MN的垂直距离为d，带电粒子重力不计．求：

（1）当v满足什么条件时，粒子能回到A点；

（2）在第（1）问的条件下，粒子在磁场中运动的时间t．

完形填空

阅读下面短文，掌握其大意，然后从各题所给的A、B、C、D四个选项中，选出最佳选项。
When we read books we seem to enter a new world. This new world can be similar to the one we are living in, or it can be very      . Some stories are told       they were true. Real people who live in a       world do real things; in other words, the stories are about people just like us doing what we do. Other stories, such as the Harry Potter books, are not       . They are characters and creatures that are very different from us and do things that would be       for us.
But there is more to books and writing than this. If we think about it, even realistic writing is only     . How can we tell the difference between what is real and what is not real? For example, when we read about Harry Potter, we       seem to learn something about the real world. And when Harry studies magic at Hogwarts, he also learns more about his real life than      . Reading, like writing, is an action. It is a way of      . When we read or write something, we do much more than simple look at words on a page. We use our       -- which is real-- and our imagination-- which is real in a different way --- to make the words come to life in our minds.
　　Both realism and fantasy(幻想)       the imagination and the “magic” of reading and writing to make us think. When we read       realistic, we have to imagine that the people we are reading about are just like us, even though we       that we are real and they are    . It sounds       , but it works. When we read, we fill in missing information and     about the causes and effects of what a character does. We help the writer by       that what we read is like real life. In a way, we are writing the book, too.
　　Most of us probably don’t think about what is going on in our       when we are reading. We pick up a book and lose       in a good story, eager to find out what will happen next. Knowing how we feel       we read can help us become better readers, and it will help us discover more about the real magic of books.

D．instructive

D．understanding

A．a newspaper