問題詳情

14. The United States will continue the_____  to the unknown universe even afterthe loss of two space shuttles, Challenger and Columbia.
(A) explosion
(B) venture
(C) invention
(D) damage

參考答案

答案：B
難度：困難0.272727
統計：A(1),B(3),C(2),D(3),E(0)