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．She’’ll take care of her sister.B．She’’d go jogging with the man.C．She’’s going to look after her sister’’s child.D．She’’s engaged to someone else.
A．She’’ll take care of her sister.
B．She’’d go jogging with the man.
C．She’’s going to look after her sister’’s child.
D．She’’s engaged to someone else.
单项选择题
A．Your ears.B．Your body.C．Your brain and your ears.D．Your ears and your whole body.
A．Your ears.
B．Your body.
C．Your brain and your ears.
D．Your ears and your whole body.
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