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【判断题】
稀疏矩阵中非零元素的个数远小于矩阵中元素的总数。()A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】According to the conversation, what are the experts now recommending?
A.
Exercising the entire body.
B.
Having your blood pressure taken daily.
C.
Losing weight prior to exercising.
D.
Weighing in before each exercise session.
【简答题】A．cleaing B．writing C．drawing D．exercising
【单选题】This article explains_________．
A.
the digiculties of exercising
B.
why exercising is good for your health
C.
important information to know about exercising
D.
why people have some wrong ideas about exercising
【单选题】How about _ _ after dinner? [ ]
A.
exercising walking
B.
to exercise walk
C.
to exercising walking
【简答题】Exercising your brain every day is beneficial_______.
【单选题】How about ________ after dinner? [ ]
A.
Exercising walking
B.
to exercise walk
C.
to exercising walking
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