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
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单项选择题
The author says that the appropriate way to lose weight is ______.
A．to cut our highly processed foods and drinks
B．to eat a variety of fresh or every lightly processed foods
C．to eat vegetables and eggs
D．to eat foods recommended by a physician
单项选择题
Which of the following is the author's view on the historical development of toys
A．The craftsmanship in toy-making has remained essentially unchanged.
B．Toys have remained basically the same all through the centuries.
C．The toy industry has witnessed great leaps in technology in recent years.
D．Toys are playing an increasingly important role in shaping a child's character.
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