题目内容
(请给出正确答案)
[主观题]
A.A mother giving birth in spring will eat less vitamins than those giving birth in au
tumn.
B.In summer, babies are prone to infections of the digestive system.
C.In Austria, adults born in autumn lived about four months longer than those born in spring.
D.Although nutrition at all times of the year has improved, the seasonal pattern persists.
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