()标志中国古代历法的基本定型,它与现行公历周期相同,比现行公历的确立早300年。
A.《夏小正》
B.《太初历》
C.《授时历》
D.《大衍历》
参考答案:C
—I didn’t take notes at yesterday’s meeting because I had left my pen at home.
—You ________ mine. I ______ it.
A.must have borrowed; wasn’t using
B.may have borrowed; wasn’t using
C.should have borrowed; hadn’t used
D.could have borrowed; wasn’t using
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