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【单选题】
表达式 {1, 2, 3, 4, 5} ^ {4, 5, 6, 7} 的值为 _________________________ 。A.
{1, 2, 3, 4, 5,6,7}
B.
{4, 5}
C.
{1, 2, 3, 6, 7}
D.
{1, 2, 3,}
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举一反三
【简答题】She enjoys going to the ______ (健身房)in her spare time.
【简答题】外键关联是将一个表的主键与另外一个表的外键进行关联。因此,它使用( )标签配置。A. B. C. D.
【单选题】She enjoys going to parties and ______ in discos all night long.
A.
to dance
B.
dancing
C.
dance
D.
danced
【单选题】Elizabeth enjoys going to work in downtown New York
A.
The Watsons live in a small apartment in a suburb of New York City. The offices where Elizabeth works are in downtown New York, and she has to take a bus and two subway trains to go to work every day. It takes her about one hour to get there. She finds the trip boring and tiring. Elizabeth enjoys going to work in downtown New York A、Right
B.
Wrong
C.
Not mentioned
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