单项选择题


A．aren't
B．weren't
C．isn't
D．wasn't
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单项选择题
A．involveB．interpretC．recallD．resolve
A．involve
B．interpret
C．recall
D．resolve
单项选择题
A．magnifiesB．intervenesC．containsD．maintains
A．magnifies
B．intervenes
C．contains
D．maintains
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