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【判断题】
断层是岩石发生破裂,两侧没有明显位移。()A.
正确
B.
错误
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举一反三
【单选题】During the Han Dynasty, therewere attempts at various styles and embryonic forms of those styles emerged.However, the representative style of calligraphy in the Han Dynasty was the______.
A.
regular style
B.
B. running style
C.
C. grass style
D.
D. clerical style
【单选题】What color did the officers wear in the Han Dynasty in the spring?
A.
Red.
B.
Yellow.
C.
White.
D.
Cyan.
【简答题】已知等差数列{a n }中，a 2 ，a 4 ，a 9 成等比数列，则 a 1 + a 3 + a 5 a 2 + a 4 + a 6 =______．
【简答题】已知等比数列{a n }中，各项都是正数，且 3 a 1 ， 1 2 a 3 ，2 a 2 成等差数列，则 a 7 a 5 =______．
【判断题】Costumes and adornments were of the black colour in the Qin dynasty, but this style changed in the Han dynasty to red.
A.
正确
B.
错误
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