______ set of products has its own code, and we can recognize them easily.
A.Every
B.Each
C.All
D.None

A.A.Every
B.Each
C.All

【参考答案】

B
解析：虽然(A)every后也接单数名词，但通常强调全体，意为“每个，所有”；(C)all表示“全部的，总的......

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