单项选择题

The chickens Eijkman noticed in the hospital yard ______.

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

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单项选择题

The disease'beri-beri' ______.

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