单项选择题

A．It can cause flooding annually.
B．It can carry diseases that affect animals.
C．It can introduce too much salt into the soil,
D．It can divert water from important crops.
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单项选择题
A．She misses her old roommate.B．She didn’t get along with Julia.C．She does not know Julia very well.D．She did not really enjoy living with Julia.
A．She misses her old roommate.
B．She didn’t get along with Julia.
C．She does not know Julia very well.
D．She did not really enjoy living with Julia.
单项选择题
A．People working in a large factory.B．People walking on crowded city streets.C．An everyday activity in a small town.D．A well-known historical event.
A．People working in a large factory.
B．People walking on crowded city streets.
C．An everyday activity in a small town.
D．A well-known historical event.
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