单项选择题

A．By using satellite images, maps, etc..
B．By studying specific farming methods.
C．By studying the variation of human population.
D．By analyzing the quality of crops.
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单项选择题
A．Because he has no extra money to buy gifts.B．Because it’’s almost impossible to pick a perfect gift.C．Because it takes a lot of time to choose gifts.D．Because his gifts are often put into the closet.
A．Because he has no extra money to buy gifts.
B．Because it’’s almost impossible to pick a perfect gift.
C．Because it takes a lot of time to choose gifts.
D．Because his gifts are often put into the closet.
单项选择题
A．In China town.B．In the northern part of the city.C．All over the city.D．In Japan Town.
A．In China town.
B．In the northern part of the city.
C．All over the city.
D．In Japan Town.
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