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【单选题】
依据《安全生产法》和《标准化法》的规定，涉及安全生产方面的标准主要有国家标准和行业标准，其中多数是( )标准。A.
普遍性
B.
原则性
C.
合理性
D.
强制性
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举一反三
【单选题】I didn't see your sister at the party. If she __, she would have met my brother.
A.
has come
B.
had come
C.
did come
D.
came
【单选题】—Can I have ________ apple? —Oh, your sister has just had it.
A.
another
B.
other
C.
one more
D.
the other
【单选题】— Whose T-shirt is this? — It's _____________. [ ]
A.
your sister
B.
your
C.
your sister's
【简答题】—________is your sister? —Sorry，l don-t know．
【单选题】I was supposed to go to a concert with your sister the other night, but your sister didn't turn up. I can't believe I have been______.
A.
given up
B.
stood up
C.
left up
D.
taken up
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