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【单选题】
将数据库的结构划分成三级模式“外模式-模式-内模式”,是为了提高数据库的( )。A.
数据完整性
B.
数据独立性
C.
管理规范性
D.
数据的共享
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举一反三
【单选题】He took many photos of the palaces in Beijing. 请指出“many photos”和“in Beijing”在句中的成分。
A.
主语；定语
B.
宾语；补语
C.
定语；补语
D.
宾语；状语
【单选题】During World War II, he took many photos, ______some captured the emotions of both the soldiers a
A.
38．During World War II, he took many photos, ______some captured the emotions of both the soldiers and the civilians in war-torn Europe. A．from them
B.
of which
C.
by which
D.
among them
【单选题】He took many photos of the palaces in Beijing.(此句的宾语是什么?)
A.
He
B.
took
C.
took many photos of the palaces
D.
in Beijing
【单选题】He took many photos of the palaces in Beijing.
A.
主-谓 S-V
B.
主-谓-宾 S-V-O
C.
主-系-表 S-linkV-P
D.
主-谓-间宾-直宾 S-V-IO-DO
E.
主-谓-宾-宾补 S-V-O-C
【简答题】已知函数f(x)＝lnx－ ，若函数f(x)在(0，＋∞)上为增函数，则a的取值范围是________．
【简答题】7. He took many photos of the palaces
in Beijing .
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