問題詳情

    Unmanned aerial vehicles (UAV), colloquially known as drones, arereinventing old businesses and even creating brand new opportunities. 36 ,businesses have used drones largely in video and photography, especially formarketing purposes, but there are many other applications of UAV technology thatmight surprise you. For example, farmers can benefit from drones in several ways.In fact, many in the UAV industry cite agriculture as an enormous area ofopportunity for drone technology. 37 can drones save farmers money byhelping them identify failing plants early and 38 inventory of crops, but themachines can also be used to map and study the farmland and its irrigation systems.In each of these cases, utilizing drones helps 39 . In addition, drones can beequipped to spray pesticides, fertilizers or water on crops. Each UAV is like a farcheaper mini-crop duster. Moreover, for farms 40 livestock, drones can alsobe used to monitor the animals and quickly gather and track useful data aboutanimal health and population.
36.
(A) First
(B) In the past
(C) Currently
(D) So far

參考答案

答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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