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【单选题】
组织教学活动的中心环节是( )。A.
提供感性材料
B.
引起学习动机
C.
帮助领会知识
D.
指导运用知识
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【简答题】文章是围绕哪一句话来写的?你是自己理解这句话的,结合课文内容说一说。
【简答题】People who smoke are ______ er of developing lung disease from heavy smoking.
【简答题】儒家代表了中国本土传统文化的主流思想,《大学》中的 、___________、____________就是三纲领。
【简答题】Fill in each of the blanks in the following sentences with a suitable preposition or adverb. 1. People who smoke are ______ er of developing lung disease from heavy smoking.
【简答题】II.Working with Expressions Fill in each of the blanks in the following sentences with a suitable preposition or adverb ...
【单选题】图 示电路中,电源电压的有效值 U=1V 保持不变,但改变电源频率使电阻两端所接电压表的读数也为 1V ,则此时角频率ω = ( ) rad/s 。
A.
500
B.
1
C.
1000
D.
1000/2π
【单选题】图示电路中，电源电压的有效值U=1V保持不变，但改变电源频率使电阻两端所接电压表的读数也为1V，则此时角频率ω=（ ）rad/s.【图片】
A.
1
B.
100
C.
500
D.
1000
【简答题】I. Fill in each of the blanks in the following sentences with a suitable preposition or adverb. 1. People who smoke are ______ er of developing lung disease from heavy smoking. 2. The mat...
【简答题】Working with Expressions Fill in each of the blanks in the following sentences with a suitable preposition or adverb. 1. People who smoke are ______ er of developing lung disease from heavy smoki...
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