单项选择题


A、
B、
C、
D、

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3. The teacher was shocked that the student, whoplag_________ an essay from a journal, didn't feel sorry for his behavior.
单项选择题
A．10∠20°Ω B．10∠-70°Ω C．10∠70° Ω D．10∠-20°Ω
A．10∠20°Ω
B．10∠-70°Ω
C．10∠70° Ω
D．10∠-20°Ω
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