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  3. AAlthough pearls may be formed by any shelled mollusk, the most valuable pearls

AAlthough pearls may be formed by any shelled mollusk, the most valuable pearls

游客2025-03-30  3
问题 AAlthough pearls may be formed by any shelled mollusk, the most valuable pearls are obtained Bfrom the oysters. Except for Cimitation pearls, which are entirely man-made, all pearls are formed from a secretion around an irritating body that enters the soft tissue of a mollusk. DIf the irritating body enters the mollusk by accident, a natural pearl forms.
选项 A、 
B、 
C、 
D、 
答案 B
解析 B项oysters为名词复数，表泛指，前面不应加定冠词the，因此应将from the oysters改为from oysters。
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