单项选择题

Questions 29 to 31 are based on the passage you have just heard.

A．By forcing them farming.
B．By affecting the quality of soils.
C．By adding chemicals and polluting the waterways.
D．By affecting the environments they live in.
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单项选择题
A．19 years old.B．13 years old.C．15 years old.D．17 years old.
A．19 years old.
B．13 years old.
C．15 years old.
D．17 years old.
单项选择题
A．He did not receive the New Student Packet.B．He did not read through the New Student Packet.C．The City Metro did not send an advertisement to him.D．He did not join the student union.
A．He did not receive the New Student Packet.
B．He did not read through the New Student Packet.
C．The City Metro did not send an advertisement to him.
D．He did not join the student union.
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