单项选择题

A．Rivers can be polluted, seas over fished, and forests may vanish.
B．Nature will replace trees quickly.
C．There will be plenty of fish in the sea.
D．The air will be purified easily.
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单项选择题
A．At home.B．In the hospital.C．At work.D．In the department store.
A．At home.
B．In the hospital.
C．At work.
D．In the department store.
单项选择题
A．Master’s.B．Associate.C．Doctor’s.D．Bachelor’s.
A．Master’s.
B．Associate.
C．Doctor’s.
D．Bachelor’s.
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