阿摩線上測驗
14. The United States will continue the_____ to the unknown universe even after
the loss of two space shuttles, Challenger and Columbia.
(A) explosion
(B) venture
(C) invention
(D) damage
答案：登入後查看
統計： A(6), B(16), C(9), D(3), E(0) #1203650
統計： A(6), B(16), C(9), D(3), E(0) #1203650
