单项选择题

The chickens Eijkman noticed in the hospital yard______.

A．couldn't digest the huskless rice
B．proved beriberi is transmitted by germs
C．were later cooked for the patients' food
D．were suffering from vitamin deficiency

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热门试题

单项选择题

The disease beriberi ______.

A．kills a large number of western people
B．is a vitamin deficiency disease
C．is transmitted by diseased rice
D．can be caught from diseased chickens

单项选择题

Fresh fruit and vegetables______.

A．contain more vitamin C than any other food
B．decrease our resistance to colds
C．contain every kind of vitamin
D．increase our susceptibility to influenza