单项选择题

The author recommends that young people ______.

A．check blood hemoglobin yearly
B．be oh a strictly vegetarian diet
C．lose weight
D．do some more studies on hemoglobin
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单项选择题
The passage is mainly about ______.
A．the importance of diet
B．the need of iron
C．adolescents' eating habits
D．blood hemoglobin
单项选择题
The author says that the appropriate way to lose weight is to ______.
A．cut out highly processed foods and drinks
B．eat a variety of fresh or very lightly processed foods
C．eat vegetables and eggs
D．eat foods recommended by a physician
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