Eight hundred years ago an Englishman _____.
A. made a kind of flying machine
B. tried to fly with wings made of chicken feather
C. wanted to build a kind of balloon
D. tried to fly on a large bird
A. made a kind of flying machine
B. tried to fly with wings made of chicken feather
C. wanted to build a kind of balloon
D. tried to fly on a large bird
【答案】
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