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【简答题】
根据三规则,判断 TiO 2 -ZnO 表面酸位的性质,并详细论述判断过程。( ZnO 含量 5% ; TiO 2 含量 95% , Ti 6 配位, Zn 4 配位) 。
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举一反三
【单选题】When I came in, I saw her sitting in the sofa ______ in thought.
A.
to lose
B.
losing
C.
lost
D.
being lost
【单选题】－Mary, how did your Math test go? －I had thought I _________, but in fact I came in the top 10% in my class.
A.
should have failed
B.
couldn’t have failed
C.
might have failed
D.
shouldn’t have failed
【简答题】— Mary,how did your maths test go? —I had thought I _____ ,but in fact I came in the top 10 in my class. A．should have failed B．couldn’t have failed C．might have failed D．shouldn’t have failed
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