According to the passage, what is ECGC? A.A medicine made from green teA. B.A powerful substance in green teA. C.An additive essential to green teA. D.A special treatment to make green teA.
A.A B. B.A C. C.An D. D.A
【参考答案】
B 解析：这是道上下文理解题。解题句子是“One such antioxidant in green tea i......