单项选择题

A．Animals lived in cages made of concrete with iron bars.
B．Animals lived in natural environments.
C．Streams of water flew through the cages.
D．Several species of animals lived together.
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单项选择题
A．How many poor people there were in his town.B．Whether the poor people really needed his help.C．If the people of the town were worthy of his help.D．Who was willing to do a seemingly thankless job.
A．How many poor people there were in his town.
B．Whether the poor people really needed his help.
C．If the people of the town were worthy of his help.
D．Who was willing to do a seemingly thankless job.
单项选择题
A．At the university’s main library.B．At the graduate school library.C．At the county public library.D．At the city’s largest private library.
A．At the university’s main library.
B．At the graduate school library.
C．At the county public library.
D．At the city’s largest private library.
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