单项选择题

A．The delicate structures of the inner ear.
B．The inner ear cells.
C．The eardrums.
D．The inner ear ossicles.
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单项选择题
A．Neural tube defects. B．Heart problems.C．Cleft lip and palateD．Diabetes
A．Neural tube defects.
B．Heart problems.
C．Cleft lip and palate
D．Diabetes
单项选择题
A．A cocktail of vitamins.B．A cocktail of vitamins plus magnesium.C．The combination of vitamins A, C and E.D．The combination of minerals.
A．A cocktail of vitamins.
B．A cocktail of vitamins plus magnesium.
C．The combination of vitamins A, C and E.
D．The combination of minerals.
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