李老师“阿基米德原理”这节课,大多数同学积极参与,课堂气氛活跃,但评课教师认为学生参

题型:问答题

问题:

李老师“阿基米德原理”这节课,大多数同学积极参与,课堂气氛活跃,但评课教师认为学生参与的深度不够,突出表现在课堂提问方面。例如,李老师提出问题后.通常学生齐声回答“对”“不对”“懂了”“是”……,难以激发学生深入思考。根据上述内容,回答下列问题:以“阿基米德原理”内容为例,写出一个能引导学乍理解阿基米德原理的课堂提问。

考点:初级中学物理物理教学实施物理教学实施题库
题型:问答题
完形填空。
     When you are invited to a meal in Thailand, the wards of the invitation    1    "come and eat rice". In
fact    2   all Thai dishes are eaten with rice, which grows there easily    3   the climate is warm and there
is much    4  . The food that is served is    5   cut into pieces, so there is no need to use knives and forks
    6  , instead, special spoons and forks are used. The Thais    7   to eat with their hands and now there
are still some people who eat this    8  . There is a special way of doing it. First they wash their    9   hands
in a bowl of water, they only eat with their right hands. They are careful not to let the food   10   the palms
of their hands. After the meal, the   11  are again carefully washed.
     The meal usually has several different   12  . They are all hot. They are served in bowls which everyone
shares,   13   each person has their own bowl of rice.   14   Thailand has a long coastline, it is not surprising
   15  fish and shellfish play an important part in Thai cooking.
( )1.A. says     
( )2.A. nearly   
( )3.A. when     
( )4.A. wind     
( )5.A. never   
( )6.A. when     
( )7.A. went     
( )8.A. way      
( )9.A. left             
( )10.A. touch    
( )11.A. forks    
( )12.A. kinds    
( )13.A. because  
( )14.A. As       
( )15.A. the    
B. means         
B. not            
B. if              
B. rain          
B. always       
B. so             
B. used           
B. rice            
B. right          
B. catch           
B. spoons        
B. dishes       
B. though         
B. Where          
B. which        
C. mean        
C. never         
C. because          
C. water          
C. hardly      
C. but           
C. wanted         
C. dish           
C. dirty                                           
C. feel             
C. hands           
C. bowls      
C. since         
C. When          
C. that       
题型:问答题

在100℃时,将0.100mol的四氧化二氮气体充入1L抽空的密闭容器中,隔一定时间对该容器内的物质进行分析,得到如下数据

试填空:

(1)该反应的化学方程式为______________________,达到平衡时四氧化二氮的转化率为______%表中c2________c3________a________b(选填“>”、“<”、“=”)。

(2)20s时四氧化二氮的浓度c1=____________mol·l-1,在0s~20s内四氧化二氮的平均反应速率为

___________mol·(L·s)-1

(3)若在相同情况下最初向该容器充入的是二氧化氮气体,要达到上述同样的平衡状态,二氧化氮的起始浓度是_________mol·L-1

题型:问答题

明清时期,湖州始终是全国制笔业的中心,所出湖笔深受文人的喜爱。

题型:问答题

《关于开展员工不良行为集中举报排查的通知》(鄂农信办字[2013]69号)规定,县(市)行社领导班子成员,应由市州行社监事长负责排查。

题型:问答题

()与皮肤对各种生物性刺激防护无关。

A、皮下脂肪厚度

B、表皮酸碱度

C、皮脂腺分泌不饱和脂肪酸的种类

D、致密完整的角质层

更多题库