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【多选题】
根据《合同法》规定，下列情况属于合同的变更的有( )。A.
标的物数量的变更
B.
质量标准的提高
C.
违约金的增加
D.
合同当事人的变更
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A.
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B.
might
C.
would
D.
should
【单选题】— I am going to New York this evening. Is there a flight to New York then? — There ____ be a flight. But you'd better call the booking office to make sure. [ ]
A.
must
B.
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C.
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A.
must
B.
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C.
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A.
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B.
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C.
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D.
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【简答题】已知A的ASCII码值是65,则ASCII码值为100的字符是( )。
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