4. Have you ever ______ how the ancient Egyptians created such marvelous feats of engineering as the pyramids?
(A) concluded
(B) wondered
(C) admitted
(D) persuaded
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統計: A(7), B(106), C(10), D(10), E(0) #629273
統計: A(7), B(106), C(10), D(10), E(0) #629273