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【单选题】
设A为4阶实对称矩阵，且A2＋A＝0，若A的秩为3，则A与A相似于A.
B.
C.
D.
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举一反三
【单选题】A city is usually remembered for ______.
A.
what there is in the center of it
B.
the number of people living in it
C.
what makes it different from other cities
【单选题】What is the recreation center used for?
A.
Therecreation center organizes a variety of recreational activities for guests.
B.
Main activities are focused on arts, fitness andsports.
C.
The night club, the disco, the Karaoke bar, the ballare ready for guests to sing, to dance, to enjoy music
D.
It is used to show themself in a pleasant mood.
【多选题】What's the viewppoint of the objector of Southdale Center?
A.
Southdale Center has no charms
B.
The garden court in Southdale Center had all the shortcomings of the village street.
C.
Southdale Center wastes too much money.
D.
Southdale Center was like a downtown.
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