单项选择题

A．Its scarce proteins.
B．Its terrible taste.
C．Its many vitamins.
D．The difficulty of finding it.
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单项选择题
A．Cheap.B．Costly.C．Easy.D．Difficult.
A．Cheap.
B．Costly.
C．Easy.
D．Difficult.
单项选择题
A．They are playing in the park.B．The woman is asking the way to the park.C．The man is seeing the woman off.D．They are going to visit the park.
A．They are playing in the park.
B．The woman is asking the way to the park.
C．The man is seeing the woman off.
D．They are going to visit the park.
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