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【单选题】
催化剂能改变反应速率,主要是因为催化剂可以改变反应的:
A.
△ r G m
B.
K Θ
C.
△ r H m Θ
D.
E a
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【单选题】What has brought so many problems to Tokyo today?
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A severe earthquake and the Second World War.
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【单选题】Never ______ seen so many people cooperating in such an .
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相关题目：
【单选题】点击开始播放听力mp3:{MP3:http://wximg.233.com/attached/media/20130805/20130805105439203920.mp3} 回答下列各题： What will the man buy for his father’s birthday?
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【单选题】What has brought so many problems to Tokyo today?
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