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【简答题】
设a 1 ，a 2 ，a 3 均为正数，且a 1 +a 2 +a 3 =m，求证 1 a 1 + 1 a 2 + 1 a 3 ≥ 9 m .
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【简答题】A．In Florida. B．In New York. C．In California. D．In Indiana.
【简答题】A．Florida. B．New York. C．California. D．Indiana.
【单选题】Where docs this conversation take place?
A.
Florida.
B.
New York.
C.
California.
D.
Indiana.
【简答题】A．Florida. B．California. C．New York. D．Indiana.
【单选题】According to the passage, Indiana and Ohio supported the development of the New York canal system by
A.
helping to build the Erie Canal.
B.
building branches to connect it with the Ohio River.
C.
providing much of the water for the Erie Canal.
D.
contributing financially to the construction costs.
【单选题】从文成帝和平初( 460年)起开凿,一直延续至孝明帝正光五年(524年)止,前后60多年,被称为我国古代雕塑艺术最大宝库的是( )
A.
云冈石窟
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莫高窟
C.
龙门石窟
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麦积山石窟
【简答题】Lynn is the publisher of Indiana Living Green magazine, a local Indiana-based publication focusing on all issues related to leading a sustainable lifestyle. Her knowledge, passion and unwavering dedic...
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