問題詳情

9. After the board fell from the truck onto the highway, driversswerved and screeched to a halt in order to avoid the _____.
(A) abstraction
(B) subtraction
(C) opponent
(D) obstacle

參考答案

答案：D
難度：困難0.25
統計：A(3),B(0),C(0),D(1),E(0)