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【单选题】
出土的大批精致的玉铲、玉斧、、、玉环及人面玉饰，反映出当时人们的宗教意识的发达和玉殉葬已成为一种习俗。其中有一件独有的礼器，其几何形态的造型特殊，有大凸齿三个、小凸齿三十六个。到了黄帝时期起名“玑”，据说是为了观天象。A.
良渚 文化
B.
红山文化
C.
龙山文化
D.
大汶口文化
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【单选题】There are some earth phenomena you can count on, but the magnetic field, someday is not of them. It fluctuates in strength, drifts from its axis, and every few 100, 000 years undergo a dramatic polari...
A.
Polarity Reversal: A Fantastic Phenomenon of Nature
B.
Measurement of the Earth's Magnetic-Field Intensity
C.
Formation of the Two Poles of the Earth
D.
A New Approach to the Study of Geophysics
【单选题】I'm very grateful for your help and hope that someday I may be able to do something for you___． [ ]
A.
in exchange
B.
in turn
C.
in vain
D.
in particular
【单选题】If you got a million dollars someday, what ______ you do with it?
A.
will
B.
might
C.
shall
D.
can
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