阿摩線上測驗
15. Which of the Following is Prince Henry’s principal achievement?
(A) Improving the compass.
(B) Making oceanic exploration possible.
(C) Inventing the clipper ship.
(D) Founding a school for mariners.
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統計： A(41), B(426), C(75), D(73), E(0) #639962
統計： A(41), B(426), C(75), D(73), E(0) #639962
