Most of the purported health benefits of tea comes from antioxidants--compounds also found in beta carotene, vitamin E, and vitamin C that inhibit the formation of plaque along the body's blood vessels.
comes from antioxidants--compounds also found in beta carotene, vitamin E, and vitamin C that
comes from antioxidants--compounds that are also found in beta carotene, vitamin E, and vitamin C, and they
come from antioxidants--compounds also found in beta carotene, vitamin E, and vitamin C, and
come from antioxidants--compounds that are also found in beta carotene, vitamin E, and vitamin C and that
come from antioxidants--compounds also found in beta carotene, vitamin E, and vitamin C, and they
这里后半句确切指代的就是compounds“在beta carotene, vitamin E, and vitamin C中也被发现的成分”,用“they”无法确切指代,they可能指代antioxidants也可能指代benefits, 所以BE错
后半句说明这些成分好处的,与前面这些成分是并列关系,而非与主句是并列关系。所以C不对
compounds在从句中不成并列关系(A),而且主语谓语单复数错误(AB)
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