2. 职称英语
  3. Years ago, many of the machines were operated ______ but now they are operated b

Years ago, many of the machines were operated ______ but now they are operated b

游客2023-09-06  57
问题 Years ago, many of the machines were operated ______ but now they are operated by computers.
选项 A、manually
B、artificially
C、automatically
D、synthetically
答案 A
解析 难词辨析，原句意为：许多年以前，大部分机器都靠人工操作而现在都由计算机控制了，A. manually意为“用手工操作，人工地”，正好与by computers意义相对，符合题干要求。B. artificially意为“人造地”；C. automatically意为“自动地”，D. synthetically意为“合成地，人造地”，
转载请注明原文地址:https://tihaiku.com/zcyy/2990862.html
相关试题推荐
随机试题
最新回复(0)