搜题请搜索小程序“爱下问搜题”
问题 单项选择题

筛选是根据药物与杂质的什么不同以分离药物中所含杂质（）

A.比重

B.体积

C.质量

D.浮力

E.气味

答案

参考答案：B

阅读理解
根据表格中的内容，完成下面报导。    
AccidentBig stones fell from the mountain onto a tour bus
WeatherIt rained heavily and the wind was strong
Date and time  June 17, 2008, 6 : 20 p. m.
PlaceAt the foot of north Mountain
Details95% of the tourists were only hurt a little, seven were hurt badly. All of the wounded tourists were
sent to the local hospital. A tourist's four-year-old daughter couldn't be found.  

     Good everning! It's 8:50, Garol is here.     1   , thuty minutes ago, a bad accident happened here. Because
of     2   , some big stones fell from the mountain onto a bus. Most of the tourists only     3    themselves a little.
Seven tourists were hurt badly. Unfortunately, a tourist     4   . The police and ambulance arrived in twenty minutes.
Now, all of the wounded visitors have been taken to the local hospital. The police are still    5    the girl who
disappeared(失踪)…
查看答案
问答题 案例分析题

某老师在《赠汪伦》的教学中，老师组织了一场“表演”。

师：“同学们，今天我们上《赠汪伦》一课，大家有没有兴趣表演李白和汪伦离别时的情况呢?”同学们纷纷举手，并有两位同学上来表演，他们模仿古人的模样，用手边捋胡子，边念《赠汪伦》的诗。这种新奇的表演别开生面。后来又有一组的同学上台表演，他们想起了唱古时候离别时候的歌，可是又都不太想得起来，这时老师提醒道，我们可以唱自己知道的歌。歌曲便在教室上空飞扬。

请结合案例，分析教师应如何上好一堂课?
查看答案