单项选择题

A．She is a teacher.
B．She is a student.
C．She is a librarian.
D．She is a shop assistant.
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单项选择题
In 1950s and 1960s, Eastern societies noticed that resources for the provision of fossil fuel energy were finite and exhaustible.
A．Y
B．N
C．NG
单项选择题
The article is generally about the situation of health-care resources.
A．Y
B．N
C．NG
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