47. Which of the following statements about ferns is NOT true?
(A) They existed long before flowers did.
(B) They came into existence after hornworts.
(C) They are almost the same as those 180 million years ago.
(D) They were used to carry water for human beings to very far places.

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統計: A(104), B(105), C(121), D(205), E(0) #2390815

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