問題詳情
3 The safety board found that the country has 35,000 miles of oil, natural gas and _________ liquid pipelines, manyof which are decades old and need immediate maintenance.
(A) virtuous
(B) hazardous
(C) prestigious
(D) indecent
參考答案
答案：B
難度：困難0.25
統計：A(1),B(1),C(0),D(2),E(0)