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多选题
Given that a scoped attribute cart exists only in a user’s session， which two， taken independently， ensure the scoped attribute cart no longer exists？（）
A
B
<c：remove var=cart />
C
<c：remove var=${cart} />
D
<c：remove var=cart scope=session />
E
<c：remove scope=session>cart</c：remove>
F
<c：remove var=${cart} scope=session />
G
<c：remove scope=session>${cart}</c：remove>
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The object of the manager attribute should implement the HttpSessionListener and it should call the removeAttribute method on the appropriate session attributes.C
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单选题What is the woman’s major field of study?A
American literature.B
Elementary education.C
Art history.
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