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【单选题】
与传统课堂相比,翻转课堂有哪些突出特点 ?( ) j 教师在课堂中作为学习指导者、促进者 k 学生作为课堂中的主动研究者 l 课堂的教学形式是课前学习 +课堂研究 m 课堂的技术应用主要有自主学习、交流反思、协作讨论工具 n 评价方式以老师观察为主A.
j k l m n
B.
j k l m
C.
k l m n
D.
j l m n
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【单选题】'Fingers were made before forks' when a person gives up good manners, puts aside knife and fork, and dives into his food, someone is likely to repeat that saying. The fork was an ancient agricultural ...
A.
brought to Europe from America
B.
begun when forks were invented
C.
brought to Europe from Asia
D.
invented by Italians
【简答题】“Fingers were made before forks” when a person gives up good manners， puts aside knife and fork， and dives into his food， someone is likely to repeat that saying. The fork was an ancient agricultural ...
【单选题】This knife is made of steel( )and it can be used for a long time.
A.
mixed
B.
alloy
C.
champion
D.
grasp
【多选题】采用粒状滤料以接触过滤方式截留杂质,对粒径远小于滤料空隙的杂质而言,其被截留的主要作用是以下哪几项 ?
A.
粘附
B.
机械拦截 ( 筛滤 )
C.
惯性作用
D.
扩散作用
【多选题】采用粒状滤料以接触过滤方式截留杂质,对粒径远小于滤料空隙的杂质而言,其被截留的主要作用有以下哪几项?( )
A.
粘附
B.
机械拦截（筛滤）
C.
惯性作用
D.
扩散作用
【简答题】Where is Furtif Evercut Kitchen Knife made?
【单选题】A knife can be made sharper if you ____________ on a sandstone.
A.
ground it
B.
grind it
C.
grounded it
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