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．Get some coins at the cafe.B．Buy her a cup of coffee at the cafe.C．Get some coffee from the machine.D．Try to fix the machine.
A．Get some coins at the cafe.
B．Buy her a cup of coffee at the cafe.
C．Get some coffee from the machine.
D．Try to fix the machine.
单项选择题
A．To find out whether he wants to go canoeingB．To tell him whether her car is repaired.C．To find out what kind of food he is bringing.D．To tell him what time they are leaving.
A．To find out whether he wants to go canoeing
B．To tell him whether her car is repaired.
C．To find out what kind of food he is bringing.
D．To tell him what time they are leaving.
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