单项选择题

A．The role of inland waterways in the nation’’s growth.
B．The development of New York City as a seaport.
C．The growth of the railroads.
D．The disappearance of the canal system.
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单项选择题
A．Because people might have to migrate there someday.B．Because it is very much like the earth.C．Because it is easier to explore than other planets.D．Because its atmosphere is different from that of the earth.
A．Because people might have to migrate there someday.
B．Because it is very much like the earth.
C．Because it is easier to explore than other planets.
D．Because its atmosphere is different from that of the earth.
单项选择题
A．Because it takes time before your brain realizes that you’’re full.B．Because the slower you eat, the less you absorb.C．Because it’’s healthier to eat slowly.D．Because it helps to burn the fat in your body.
A．Because it takes time before your brain realizes that you’’re full.
B．Because the slower you eat, the less you absorb.
C．Because it’’s healthier to eat slowly.
D．Because it helps to burn the fat in your body.
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