单项选择题

A．It will allow fewer trees to be cut.
B．It will require less labor costs.
C．It saves some shipping costs.
D．It will make them more competition.
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单项选择题
A．Why species don’t avoid extinction by adapting.B．Why species become extinct at the rate they do.C．Why humans aren’t extinct.D．How many species aren’t extinct.
A．Why species don’t avoid extinction by adapting.
B．Why species become extinct at the rate they do.
C．Why humans aren’t extinct.
D．How many species aren’t extinct.
单项选择题
A．The man should start running daily.B．She also prefers to exercise in the afternoon.C．It’s important to warm up before exercising.D．The man should continue his exercise program.
A．The man should start running daily.
B．She also prefers to exercise in the afternoon.
C．It’s important to warm up before exercising.
D．The man should continue his exercise program.
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