問題詳情
20. The special heavy – duty vehicles and _________equipment allow scientists to make close-up observations of the storms.
(A) weather - monitored
(B) weather - monitoring
(C) monitoring - weather
(D) monitor- weather
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)