30. Which of the following is NOT true about modern kayaks?
(A) They are made with different materials.
(B) They are all foldable.
(C) They are not as heavy as the early ones.
(D) They can be used for many different purposes
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統計: A(0), B(54), C(12), D(10), E(0) #1711979
統計: A(0), B(54), C(12), D(10), E(0) #1711979