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【单选题】
The only language _____ is easy to learn is the mother tongue.A.
which
B.
that
C.
/
D.
it
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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 =______．
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