18 Which of the followings about the meanings of passport colors is NOT mentioned in the passage?
(A) Representing their culture.
(B) Emphasizing their national sovereignty.
(C) Reflecting their religion.
(D) Matching their national flag.
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統計: A(89), B(389), C(137), D(177), E(0) #1984734
統計: A(89), B(389), C(137), D(177), E(0) #1984734