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
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单项选择题
Huskless, milled rice ______.
A．was cheaper than unmilled rice
B．was less nourishing than unmilled rice
C．was more nourishing than unmilled rice
D．cured beri-beri
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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