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【单选题】
为了使用DataSet对象需要在源文件的开始添加对哪个命名空间的引用?A.
System .IO
B.
System .Text
C.
System .Data
D.
System .Collections
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反馈参考答案：
举一反三
【单选题】There will be trees and pollution in the future.
A.
less, more
B.
more, fewer
C.
more, less
D.
less; less
【单选题】We should eat ____ vegetables and ____ meat to keep healthy. [ ]
A.
more, more
B.
less, less
C.
more, less
D.
less, more
【简答题】More or Less Clrduse
【单选题】We can do things with money and people.
A.
more, more, more
B.
more, less, fewer
C.
less, less, less
D.
less, more, less
【简答题】5% more or less in quantity and amount will be allowed.
【简答题】more or less clause
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