单项选择题

It can be concluded that the difference between complete proteins, partially complete proteins and incomplete proteins lies in________.

A．the amount of essential amino acids
B．the types of essential amino acids
C．the amount of lysine
D．the combinations of amino acids
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单项选择题
The main idea of the fourth paragraph is________.
A．Chinese meals are much healthier than Indian meals
B．saturated fat and cholesterol will cause heart disease
C．the oriental-style cooking provides adequate proteins for all
D．eating vegetables with some meat will be helpful for taking proteins
单项选择题
________is a healthy way of eating food.
A．To have more meat and fish than vegetables
B．To take Chinese rice
C．To eat more vegetables and bean curd than meat
D．To eat half a pound of meat for each meal
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